National parks to visit in August
16 of 60 national parks average mild weather in August.
How to read this Weather words come from each park's 1991–2020 average high: mild is 55–80°F without above-normal rain. Crowds compare August with the park's own busiest month (National Park Service visits, 2023–2025).
Mild weather in August 16 parks
| Park | State | High / low °F | Precip., in | Crowds |
|---|---|---|---|---|
| Lassen Volcanic | California | 78° / 45° | 0.3 | Busy |
| Haleakala | Hawaii | 66° / 49° | 2.2 | Busy |
| North Cascades | Washington | 79° / 54° | 1.7 | Busy |
| Redwood | California | 66° / 51° | 0.3 | Busy |
| Channel Islands | California | 78° / 60° | T | Very busy |
| Crater Lake | Oregon | 69° / 42° | 0.8 | Very busy |
| Hawai'i Volcanoes | Hawaii | 74° / 56° | 5.9 | Very busy |
| Kenai Fjords | Alaska | 62° / 50° | 5.4 | Very busy |
| Kings Canyon | California | 76° / 44° | 0.1 | Very busy |
| Yellowstone | Montana and Wyoming | 71° / 37° | 1.3 | Very busy |
| Glacier | Montana | 79° / 48° | 1.2 | Very busy |
| Grand Teton | Wyoming | 76° / 40° | 1.3 | Very busy |
| Sequoia | California | 76° / 44° | 0.1 | Very busy |
| Mount Rainier | Washington | 64° / 45° | 1.6 | Very busy |
| Acadia | Maine | 78° / 60° | 3.5 | Very busy |
| Olympic | Washington | 75° / 52° | 1.1 | Very busy |
Mild, wetter than usual in August 11 parks
| Park | State | High / low °F | Precip., in | Crowds |
|---|---|---|---|---|
| Great Sand Dunes | Colorado | 78° / 50° | 1.9 | Busy |
| Wrangell-St. Elias | Alaska | 67° / 42° | 2.2 | Busy |
| Katmai | Alaska | 61° / 45° | 4.4 | Busy |
| Lake Clark | Alaska | 67° / 50° | 5.4 | Very busy |
| Bryce Canyon | Utah | 78° / 50° | 1.9 | Very busy |
| Indiana Dunes | Indiana | 80° / 63° | 4.1 | Very busy |
| Rocky Mountain | Colorado | 73° / 38° | 2.1 | Very busy |
| Glacier Bay | Alaska | 60° / 48° | 6.0 | Very busy |
| Denali | Alaska | 60° / 43° | 3.9 | Very busy |
| Isle Royale | Michigan | 73° / 52° | 3.0 | Very busy |
| Voyageurs | Minnesota | 76° / 49° | 3.0 | Very busy |
Hot in August 18 parks
| Park | State | High / low °F | Precip., in | Crowds |
|---|---|---|---|---|
| Guadalupe Mountains | Texas | 88° / 66° | 1.6 | Quiet |
| Virgin Islands | US Virgin Islands | 90° / 80° | 4.4 | Moderate |
| Congaree | South Carolina | 90° / 70° | 4.9 | Moderate |
| Capitol Reef | Utah | 88° / 63° | 1.1 | Moderate |
| Gateway Arch | Missouri | 88° / 66° | 3.7 | Busy |
| Shenandoah | Virginia | 83° / 61° | 3.8 | Busy |
| Petrified Forest | Arizona | 88° / 58° | 1.7 | Busy |
| Great Smoky Mountains | Tennessee and North Carolina | 82° / 62° | 4.4 | Busy |
| Black Canyon of the Gunnison | Colorado | 81° / 52° | 1.7 | Busy |
| Mesa Verde | Colorado | 84° / 57° | 2.0 | Busy |
| Great Basin | Nevada | 83° / 56° | 1.2 | Busy |
| Badlands | South Dakota | 88° / 58° | 1.6 | Very busy |
| Wind Cave | South Dakota | 84° / 55° | 2.3 | Very busy |
| New River Gorge | West Virginia | 81° / 60° | 4.1 | Very busy |
| Cuyahoga Valley | Ohio | 81° / 59° | 3.5 | Very busy |
| Grand Canyon | Arizona | 82° / 50° | 2.2 | Very busy |
| Theodore Roosevelt | North Dakota | 85° / 53° | 1.4 | Very busy |
| Yosemite | California | 89° / 57° | 0.2 | Very busy |
Very hot in August 15 parks
| Park | State | High / low °F | Precip., in | Crowds |
|---|---|---|---|---|
| Big Bend | Texas | 91° / 69° | 1.9 | Quiet |
| Saguaro | Arizona | 96° / 66° | 2.5 | Quiet |
| Joshua Tree | California | 103° / 76° | 0.7 | Moderate |
| White Sands | New Mexico | 95° / 64° | 1.9 | Moderate |
| Canyonlands | Utah | 92° / 61° | 1.0 | Moderate |
| Pinnacles | California | 96° / 50° | T | Moderate |
| Everglades | Florida | 91° / 76° | 6.8 | Busy |
| Death Valley | California and Nevada | 116° / 89° | 0.1 | Busy |
| Carlsbad Caverns | New Mexico | 90° / 66° | 2.0 | Busy |
| Dry Tortugas | Florida | 91° / 79° | 4.3 | Busy |
| Hot Springs | Arkansas | 93° / 71° | 3.6 | Busy |
| Biscayne | Florida | 91° / 79° | 7.0 | Busy |
| Arches | Utah | 96° / 68° | 0.9 | Busy |
| Mammoth Cave | Kentucky | 90° / 67° | 3.8 | Busy |
| Zion | Utah | 98° / 69° | 1.6 | Busy |