16 Best USA National Parks to Visit in September (+Seasonal Tips)

Looking for the perfect destination in September? This is one of the best months to explore popular U.S. National Parks. With summer crowds gone, cooler weather, active wildlife, and everything still open, it’s an ideal time to visit. In some parks, you’ll also catch the vibrant colors of early fall.

But what to expect when visiting one or the other park and what are the best USA National Parks to visit in September?

This guide highlights top National Parks to visit this month, complete with tips on the weather, what to expect, and why September is such a fantastic time to go. In addition to iconic parks, we’ve also included hidden gems that offer fewer crowds and amazing early-fall experiences.

Spoiler: September is one of the best months for most of these parks. If your travel dates are flexible, now’s the time to plan that National Park trip you’ve been dreaming of. And while it can still be quite busy, these destinations are perfect for a Labor Day weekend escape.

Bonus: We’ve collaborated with fellow travel writers who’ve shared their favorite parks to visit in September, plus tips from their personal experiences. Combined with our own picks, you’ll find plenty of inspiration for your next adventure!

READ ALSO: Where to Go in October

   

These are some of the best American National Parks to visit in September:

1. Glacier National Park

• Location: Montana.
• Suggestion by Bryanna from Crazy Family Adventure.
• Where to stay: There are several lodges inside the park, but usually fully booked. For the eastern side of Glacier, stay in St. Mary or East Glacier, MT. For the western side – stay in West Glacier.

In our opinion, September is the best month to visit Glacier National Park. The Going To The Sun Road – which is the highlight of Glacier National Park – sometimes doesn’t open until mid-July, but it’s always open in September. Also, there are fewer tourists since school is back in session.

September weather is a little cooler than in August, but it is still warm enough to go hiking in shorts and t-shirts most days. Which means it is perfect hiking- and exploring weather!

You can expect average high daytime temperatures at around 50-60°F (10-15°C) and it’s generally much warmer in the beginning of the month than at the end.

If you are lucky, you may even get a gorgeous snow day in September as well, which will make the landscape look really magical. But never fear – if it does snow in September it usually melts the next day. If you want to be safe, we would recommend visiting Glacier NP in the first or the second week in September since there is a better chance that the weather will be ideal for exploring.

In September, everything should be open in Glacier NP and all the hiking trails are generally accessible. Be aware that some trails can be closed due to grizzly bear activity, but that is the case at any time of year.

We stayed in the Glacier National Park area for 5 weeks and talked with locals there and they agreed that September is the perfect month to explore Glacier National Park! Here you can find suggestions for what to do in the park.

LEARN MORE: Glacier National Park Itinerary

   

2. Yellowstone National Park

• Location: Wyoming.
• Suggestion by Adriana from Czech the World.
• Where to stay: See our guide to the best places to stay in Yellowstone and the best hotels near Yellowstone.

Yellowstone National Park is one of the most fascinating national parks in the USA. It’s home to over 60% of all the world’s geysers and about 10,000 other geothermal features! You will be amazed to see all these colorful hot springs, erupting geysers, bubbling mud pots, fumaroles, and steam coming out of the earth. This park is a true natural wonderland!

Yellowstone is also a home to bison, bears, coyotes, wolfs, and elks.

Don’t miss the Grand Prismatic – the most famous and 3rd largest hot spring in the world, the monumental Grand Canyon of Yellowstone or the Old Faithful Geyser. There are so many amazing things to do in Yellowstone National Park that you really have to plan at least 3-4 days here. But even if you only have one day in Yellowstone, it is well worth a visit!

September is a truly spectacular time to visit Yellowstone. It’s less crowded than in the summer months, but – most importantly – it’s wildlife’s mating season. So you have higher chances of seeing wildlife in most areas of the park. September is also a great time to enjoy the fall colors in Yellowstone.

Because of the milder temperatures, it’s also a wonderful month for hiking and camping in the backcountry. Permits are easy to obtain and you won’t meet many people. Just remember that you are in bear country so always follow the bear safety rules!

While Yellowstone might start to feel a bit wintery towards the end of September, the temperatures are generally very good for outdoor activities. Be prepared for warm days and chilly nights. On average, it only rains for about 5 days in September in Yellowstone.

TIP: If you are planning a visit, make sure to check our suggested Yellowstone itinerary for any trip from 1 to 5 days.

LEARN MORE: Best Things to Do & Top Places to See in Yellowstone

   

3. Grand Teton National Park

• Location: Wyoming.
• Suggestion by Tiffany from The Stoke Fam.
• Where to stay: Jackson Lake Lodge or Jenny Lake Lodge inside the park. Alternatively, the Jackson Hole area.

The impressive landscape of Grand Teton National Park is spectacular at any time of year, but September is a particularly great time to visit. The park is fully open unless there has been an early winter storm, which is quite unlikely in September.

Not only have the crowds started to slow after the rush of summer, there is also plenty of wildlife. And Grand Teton is also known for its amazing foliage in September. Changing colors dot the hillsides with oranges and yellows that pop among the swaths of evergreens.

If you come in the second half of the month, you should be able to see the most colorful foliage. Rumor has it that the 3rd week of September is usually the most magical time to visit Grand Teton NP.

Mid-September high daytime temperatures are typically around 70°F (20°C). And even if it’s cooler, the weather is usually perfect for exploring the outdoors.

 

Whether you only have one day in Grand Teton National Park or can spend a week, there are plenty of things to do in the park.

One of the grandest ways to start your day in the park is with a sunrise and a cup of coffee at Schwabacher’s Landing on the east shore of the Snake River (see map). Not much can compare with the spectacular sight of the morning glow on the mountains, reflecting in the water below. It is a memorable scene that you’re sure to remember, even if the morning isn’t perfectly clear.

Other stops worth visiting are Antelope Flats and Mormon Row. The iconic T.A. Moultan Barn rests against the backdrop of the majestic Tetons, while nearby Mormon Row gives you a little taste of early settler life in Wyoming.

Be sure to build in some time to explore Jenny Lake, String Lake, and the surrounding areas. You can take a scenic boat cruise, rent a canoe or kayak, or venture out on a hike.

TIP: Combine two parks in one trip! Check out our itinerary suggestions for both parks via the link below.

LEARN MORE: Grand Teton and Yellowstone itinerary

   

4. Rocky Mountain National Park

• Location: Colorado.
• Suggestion by Stephanie from Explore More, Clean Less.
• Where to stay: See our selection of the best-located Rocky Mountain NP hotels.

Rocky Mountain National Park in north-central Colorado is a fall favorite, and September is a fantastic time to visit! With fewer visitors than summer and all major roads and trails still open, it’s perfect for exploring.

Mid-September marks the start of elk rutting season, offering a chance to see elk sparring and hear their iconic bugles. It’s also peak time for the brilliant yellow aspen trees, which create a stunning contrast as their leaves begin to fall. However, weekends get busy as many people visit Rocky Mountain for a day from Denver, so aim for a weekday visit if possible.

The park has something for everyone—scenic drives, glacier-fed lakes, wildlife spotting for moose and bears, and hiking options ranging from easy walks to challenging backcountry treks. Don’t miss the breathtaking Trail Ridge Road, home to the country’s highest-altitude visitor center, or the thrilling Old Fall River Road, both reliably open in September.

Weather can vary, with daytime highs in the 50s°F (10-15°C) and lows in the 30s°F (0-4°C). Snow isn’t unheard of, but September is typically the last month with full road access throughout the park.

Bonus suggestion: Nearby mountains around Aspen, Colorado, including the iconic Maroon Bells, are especially beautiful in September and make a great addition to your trip!

LEARN MORE: Rocky Mountain National Park Itinerary

   

5. Acadia National Park

• Location: Maine.
• Our suggestion.
• Where to stay: Bar Harbor.

Acadia National Park is one of the most-visited National Parks in the United States. Situated in the far northeastern corner of the USA, Acadia is a combination of stunning coastal landscapes, dreamy rugged beaches, endless forests, and beautiful lakes. In other words, it has everything for everyone.

While the park’s peak season is summer, early fall is considered the best time to visit Acadia. After Labor Day weekend, the crowds disappear and the weather is very pleasant for hiking and often warm enough for a swim in one of the lakes. Fall foliage that attracts many ‘leaf peepers’ doesn’t start till October, so September is a great shoulder month with summer-like weather and low season-like crowds.

September weather in Acadia NP is generally mild with average daytime temperatures in the high 60s (around 20°C). Locals consider this the best time to be in Acadia.

Drive up to Cadillac Mountain for some of the best panoramic views of the area. Park Loop Road is a must as well! There are so many hiking trails and beautiful spots to explore that you really have to plan at least a couple of days or even a week here. Make sure to stay within the park grounds, so that you can explore this beautiful park to the fullest without having to waste your time driving up and down.

Via the link below you can find more tips for visiting Acadia National Park and itinerary suggestions for planning your trip. Check it out!

LEARN MORE: Acadia National Park Itinerary

   

6. Yosemite National Park

• Location: California.
• Suggestion by Isabel from Bel Around The World.
• Where to stay: Yosemite Valley.

Yosemite National Park is one of the most visited National Parks in the United States, with most people coming in the summer months. While September is somewhat less busy than July or August, you should still expect the crowds.

September weather in Yosemite is lovely as it’s just nearing the end of summer. Daytime temperatures are generally in the high 70s-80s (25-30°C), with clear blue skies and little to no rain. The sun is shining and the park is in its full glory – it’s a tank and shorts kind of weather.

This weather begs for the best camping opportunities – warm in the day and cool at night. Over 95% of Yosemite is wilderness, giving you endless opportunities for hiking, rock climbing, waterfall-hunting and floating down the river. Beyond Yosemite village, Pinecrest Lake and Hetch Hetchy Reservoir are also worth a visit or trek. This just means you need to spend more than a day in Yosemite Village!

Wildlife come and go, enjoying the last of the warm weather, and the park is alive with flora and fauna. Another perk to visiting this time of year is that all of the areas of the park are open, giving countless possibilities for hiking and backpacking.

September is generally too early for colorful autumn foliage in Yosemite. For that, mid-October is a better bet. Even though most of the trees in Yosemite are evergreen, there are some opportunities to see the changing colors.

TIP: If it’s very busy, it might be rather difficult to find car parking in Yosemite. A hot tip for parking is to park at campgrounds instead of popular tourist stops. That way, you can also discover the best of Yosemite’s views from a different angle instead of taking the same pictures as everyone else. In addition, make use of the shuttle service along major trails.

LEARN MORE: First-Timer’s Guide to Visiting Yosemite

   

7. Lake Clark National Park

• Location: Alaska.
• Our suggestion.
• Where to stay: While there are lodges inside the park, most people come here on a day trip from Anchorage or Homer.

Lake Clark National Park is a remote wilderness gem in Alaska, known for its breathtaking mountain landscapes, crystal-clear lakes, and some of the best bear-viewing opportunities in the USA. This unspoiled paradise offers an experience that feels worlds away from the everyday.

September is the perfect time to visit for a truly unforgettable experience. With fall colors, the scenery is at its most stunning. Plus, bears gather along the lake shores to feast on the last of the salmon run, making it an excellent time for bear viewing.

Another bonus? September marks the end of the peak travel season, so you’ll have an easier time securing spots in the park’s lodges or on a bear-viewing tour. While the weather remains comparable to the summer months (as good as it gets in Alaska), the smaller crowds make for a more serene experience. I am convinced that September is the best time to be in Alaska overall.

Good to know: Lake Clark is only accessible by floatplane, adding an element of adventure to your trip. However, remote access also means careful planning is essential.

TIP: We visited Lake Clark on a bear-viewing tour from Anchorage. The company we used even provided a discount code for our readers. For more details and tips to plan your visit, check out the link below!

LEARN MORE: Bear Viewing in Lake Clark National Park

   

8. Mount Rainier National Park

• Location: Washington.
• Our suggestion.
• Where to stay: Inside the park: National Park Inn or Paradise Inn. Nearby: Ashford, WA.

Mount Rainier National Park, just 60 miles south of Seattle, is a nature lover’s paradise. While summer draws the most visitors, September is ideal for exploring without the crowds.

The weather is mild and perfect for outdoor activities. However, temperatures depend on elevation—Ohanapecosh (1,950 ft) averages 72°F (22°C), while Paradise (5,400 ft) averages 57°F (14°C). Lows usually stay above freezing. It rains quite a lot, but that’s the case here in any season, so make sure to pack a rain jacket.

September is typically snow-free, with all facilities, roads, and trails open. Sunrise Road usually stays open until mid-September, and Chinook Pass remains accessible until November.

Don’t miss the Skyline Trail, a moderate 5.4-mile loop that takes about 4 hours and offers stunning views when the mountain is visible. For an easier, family-friendly option, the Nisqually Vista Trail (2.2 miles) is a great choice, usually open until mid-September. Here you can find a complete overview of all the hikes that are open this time of the year.

For fall foliage, visit late September or early October. Colors vary by elevation and plant type, but the effort to find the best displays is well worth it.

TIP: September weekends can get crowded at Mt Rainier. For the best experience, visit during the week, stay inside the park or just nearby, and start early in the morning.

   

9. Olympic National Park

• Location: Washington.
• Suggestion by Karen from Travel Mad Mum.
• Where to stay: Inside the park: Kalaloch Lodge or Lake Crescent Lodge. At the coast, Port Angeles or Sequim. On the southeastern side, Union Town.

Located in northwest Washington, Olympic National Park is an awe-inspiring natural wonderland. Spanning nearly a million acres, it boasts diverse landscapes, including towering mountains, lush rainforests, and a rugged coastline, making it one of the most unique parks in the country.

While the park can get very busy in July and August and can be quite wet for the rest of the year, September is probably one of the best months to visit Olympic NP. There are fewer crowds, no traffic, and fewer bugs.

The special thing about visiting the Olympic NP in September is the sightings of wildlife and birds. We saw many black bear footprints as it is berry season during that period. Furthermore, the landscape and the colors start to change coming into the fall, especially in the second half of September.

September temperature is perfect, making hikes bearable, especially under the canopy of the rainforest. We visited at the beginning of the month and had beautiful summer-like weather.

Swimming in the cool river beneath rope swing bridges and picnicking with the most magnificent landscape, was a once in a lifetime memory we will never forget.

TIP: While most visitors stay in Port Angeles or Sequim, I highly recommend Union—a charming small town with friendly locals, delicious food, and an incredible setting. Located on a fjord that feels like a river, it’s the perfect spot to watch sunsets and, if you’re lucky, orcas swimming by.

We stayed in Union and spent our days hiking in Olympic National Park, which offers trails for all levels, many of them easily accessible from the town. Evenings were spent relaxing on the jetty, soaking in the stunning views over the fjord.

LEARN MORE: Olympic National Park Itinerary

   

10. North Cascades National Park

• Location: Washington.
• Suggestion by Hannah from That Adventurer Blog.
• Where to stay: See here.

September is the perfect time to visit North Cascades National Park in northern Washington. By this time, the winter snow has melted, and the summer crowds have thinned, giving you a chance to fully enjoy the park. You can often still hike at higher elevations before the first snowfall of the season arrives.

The North Cascades Highway, an incredibly scenic drive along a mountain pass, is usually open in September as well. Driving this road is one of the best things to do in the North Cascades NP, so don’t miss it!

September also means cooler temperatures, with daytime temperatures averaging at around 60°F (16°C) – perfect for hiking.

There are some beautiful day hikes and backpacking trips you can do in the North Cascades! One of the best North Cascades hikes is the Cascade Pass Trail. It offers stunning views of some of the park’s glaciers and peaks. As you reach the pass, you’ll be rewarded with views of Eldorado, Johannesburg, Magic, Mixup, and McGregor.

Visiting North Cascades in late September offers a stunning treat: golden larches. Though they resemble pine trees, larches aren’t evergreen, and their vibrant display lasts only a few weeks. Alongside the golden hues, the landscape comes alive with orange and red tints, making it a breathtaking time to visit.

LEARN MORE: North Cascades Day Trip from Seattle

   

11. Sequoia National Park

• Location: California.
• Suggestion by James Ian, Parks Collecting.
• Where to stay: Wuksachi Lodge or Montecito Sequoia Lodge.

Sequoia National Park and the adjacent Kings Canyon National Park (see below) in California are home to the largest sequoia trees in existence, which are in turn, the largest trees on earth. The biggest trees have been given names such as President’s Tree, General Grant Tree, and Chief Sequoya Tree. The sequoia trees are truly awe-inspiring!

There are several hiking trails in the park, but the Congress Trail is my favorite. It starts at the General Sherman Tree (the largest tree on the planet) and goes past several named individual trees and small groves.

Another highlight of Sequoia NP is the Big Trees Trail. The best time to hike here is at dusk when black bears can often be seen coming out of the surrounding woods to feed on fallen logs on the meadow that the trail encircles. Just make sure that you follow bear safety rules! The Giant Forest Museum is small but has interesting insights and so worth a quick visit as well.

While the park can be visited the whole year, September is one of the best months. The weather is cooler, the summer crowds have left, and the winter snow has not yet come. The first half of September tends to be quite busy, especially around Labor Day weekend. But later in the month, the crowds are much smaller and the weather is still very pleasant.

The main lodge of Sequoia NP, Wuksachi Lodge, is open all year round. Several of the most popular campgrounds take reservations in peak season, which ends the last week of September. After that, campgrounds become first-come, first-served. Keep in mind that RVs can’t use the south entrance to the park; the road south of the main Lodgepole area is too narrow.

   

12. Kings Canyon National Park

• Location: California.
• Suggestion by Andy Couch from Sleep in the Woods.
• Where to stay: Cedar Grove Lodge (basic). See also accommodation suggestions for Sequoia NP above.

Kings Canyon National Park is probably best known for its huge sequoia trees, granite canyon walls of Cedar Grove, and some amazing wildlife including bears and cougars. Adjacent to the better-known Sequoia NP (see above), this park offers amazing scenery but is somewhat less visited, making it a perfect getaway from the crowds.

Drive past the Grant Grove section to Cedar Grove to see a completely different side of Kings Canyon. Away from the big trees, you can enjoy sweeping views, rocky cliffs, and hardly any other people.

Kings Canyon has hiking trails of various levels. Zumwalt Meadow Walk is a flat, easy hike that takes you through the woods, alongside a small river, and around a big meadow. Mist Falls Trail has some steeper sections but still isn’t hard.

September (and especially the second half of the month), is a great time to visit Kings Canyon National Park. While the nights can get quite chilly, it’s still warm during the day. Average high temperatures are in the very pleasant lower 70s range (20-22°C). It’s also one of the driest months in the park.

We visited in late September and the Cedar Grove Visitor Center was already closed, but Grant Grove Visitor Center was open. Sentinel Campground was not taking reservations at that time of the year, but there were plenty of open campsites to choose from upon arrival. The Cedar Grove area also has a hotel and small cabins if camping isn’t your thing. The Cedar Grove Lodge is rather basic and has a general store and a cafe.

We really enjoyed Kings Canyon in September because of its beauty as well as the lack of people. It felt like we had the park to ourselves, and we wished we could’ve stayed longer than two nights.

   

13. Redwood National and State Parks

• Location: California.
• Suggestion by Kay from The Awkward Traveller.
• Where to stay: Garberville, CA for the southern side of Redwoods. Fortuna, CA, and Eureka, CA are more centrally located along the coast. Crescent City, CA for the northern side.

Redwood National Park along Northern California’s coast is surprisingly underappreciated. Aside from the peak months of summer, the Redwood NP is usually void of large crowds or heavy traffic. Winter months often make the park undesirable with cold rain and dense fog. That is why the shoulder month of September is the perfect month to visit!

Summer visitors have dissipated and the sun still lingers through the treetops a few hours longer allowing for a good amount of daylight to explore this vast park. Plus, September brings beautiful orange, red, and yellow fall foliage to the numerous trails and hillsides.

All services throughout the park are still open. The weather is warm in the mornings but can get a bit chillier in the afternoons. You can expect high daytime temperatures in the 70s (20-25°C). It usually remains pretty dry throughout the month.

The Redwoods are very large and spread out, but there aren’t any direct shuttles or bus services from major “nearby” cities. So, the most convenient way to visit is by your own car or with a tour from San Francisco.

TIP: If you are only visiting Redwoods for a day trip, follow the ‘Avenue of the Giants’ path. It’s a road that winds through the tallest Redwood trees and passes historic restaurants, cafes, and gift shops within the area.

If you would like to stay overnight, there are many hotels and cabins along the highway that offer a scenic view of California’s coast.

   

14. Joshua Tree National Park

• Location: California.
• Suggestion by Nadine from Le Long Weekend.
• Where to stay: 29 Palms, just outside the north entrance.

Visiting Joshua Tree National Park is a treat at any time of the year, but traveling in September is an even more special experience. Although technically still summer, September in Southern California sees temperatures start to dip from searing hot to tolerably hot. Especially towards the end of the month.

Still, daytime temperatures in Joshua Tree National Park in September are generally in the high 80’s (30-35°C), rarely falling under 75°F (24°C). So be sure to pack lots of water, good walking shoes, and sun protection so you don’t get caught out.

However, it’s at this time when summer holidays are over and schools have resumed, that the park is at its quietest. It’s easy to find a quiet place to hike, camp, and experience this unique natural habitat at its best. Also, if you plan on camping at Joshua Tree National Park, it’s easier to get a reservation for September than later in the fall, when temperatures dip and visitor numbers climb.

I recommend starting your visit at one of the visitor centers. They can give you valuable advice for your visit and suggest key sights and attractions.

Be sure to add a few day hikes to your itinerary. We recommend the Hidden Valley Trail, Barker Dam Trail, and the Skull Rock Nature Trail – all quite easy hikes, even when it’s dry and very hot. A visit to the Cholla Cactus Garden to take in the ‘teddy bear’ cacti, and to the Keys view lookout point for views over the Coachella Valley and Mount San Jacinto are also not to be missed.

TIP: Keep an eye on the weather forecast and plan accordingly. If it’s very hot, make sure to start your hikes early in the morning so that you’re back by 10-11 AM.

   

15. Canyonlands National Park

• Location: Utah.
• Suggestion by Nicole from American SW Obsessed.
• Where to stay: See our guide to where to stay near Canyonlands National Park.

Canyonlands National Park, one of Utah’s Mighty 5, is often overshadowed by its more popular neighbor, Arches National Park, but it definitely deserves a spot on your Utah bucket list. The park is divided into three districts: Island in the Sky, The Needles, and The Maze.

The most accessible and popular is Island in the Sky, located about 30 minutes from Arches NP and 45 minutes from Moab, making it easy to visit both parks in one day.

While summer draws crowds to Island in the Sky, the heat can make exploration difficult. That’s why September or fall is the best time to visit—fewer people and cooler temperatures make for more comfortable hiking and sightseeing. With limited shade, summer visits can be tough, especially for hikers.

Mesa Arch is one of my favorite hikes in Canyonlands and a must-see, especially at sunrise when the arch glows in stunning colors. The easy, half-mile trail is family-friendly, though unpaved, so if you’re heading out in the dark for sunrise, bring a good flashlight. If early mornings aren’t your thing, visiting during the day is equally rewarding, as the arch remains impressive in any light.

Other highlights include Green River Overlook and Grand View Point, both offering breathtaking views rivaling those of the Grand Canyon.

In September, expect daytime temperatures around 80°F (27°C), but mornings and late afternoons provide the ideal weather for exploring. Visit after Labor Day to experience the park’s beauty without the crowds.

LEARN MORE: Best Things to Do in Canyonlands National Park

   

16. Indiana Dunes National Park

• Location: Indiana, close to Chicago, IL.
• Suggestion by Kirsten from Kids Are A Trip.
• Where to stay: Michigan City, IN. Or simply visit from Chicago.

One of our favorite National Parks to visit in September is Indiana Dunes National Park on the shores of Lake Michigan, just 1-hour drive from Chicago. Having lived in this area for many years, we find that this is one of the most beautiful spots in the Midwest.

September weather is often the best weather all year, with warm breezes, and only occasional rain showers. If you come at the end of the month, you may be able to see the leaves changing colors signaling the beginning of fall. Bring a light rain jacket, just in case.

Head to the visitor center first and grab a map of the park as it spans over 15,000 acres, both along the shoreline and into the forest. There’s the main parking lot once you pass through the gate, and several trail options leave from this area.

If you are looking for accessible trails, it’s best to head to the area known as Portage Lakefront and Riverwalk Trail with a paved walking path, viewing platform, accessible fishing pier, and even a ramp down to the beach.

We like starting on the Dune Ridge Trail and then branching off on other loops in the forest. There are trails for all levels of hiking along the dunes, the marsh, and the lake. Here you can find more ideas for things to do in and near Indiana Dunes NP.

READ ALSO: How to See the Best of Chicago in 2 Days

   

So, this is our selection with suggestions for some of the best National Parks to visit in September. What’s your favorite American National Park in September? Please leave a comment below and tell us all about it!

EXTRA TIP: While not National Parks, Custer State Park and Mount Rushmore in South Dakota are also great places to visit in September. It’s one of the best times for that area – nice weather and fewer crowds. Check it out!

More National Parks travel inspiration:

• National Parks in October
• National Parks in November
• National Parks in December
• National Parks in January
• National Parks in February
• National Parks in March
• National Parks in April
• National Parks in May
• National Parks in June
• Best National Parks to Visit with Kids
• Lesser-known National Parks in the U.S.
• American Road Trip for Nature Lovers

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