Colorado
National parks in Colorado
Colorado has 4 national parks and 4 other busy National Park System sites in this guide. The best months below balance mild weather and crowds.
| Park | Best months | Busiest | July high / January low °F | Visitors a year |
|---|---|---|---|---|
| Rocky Mountain National Park | Jun | Jul | 76° / 5° | 4,147,000 |
| Mesa Verde National Park | Apr and May | Jun | 86° / 20° | 483,000 |
| Great Sand Dunes National Park | Jun and Oct | Jun | 81° / 11° | 461,000 |
| Black Canyon of the Gunnison National Park | May and Jun | Jun | 82° / 13° | 314,000 |
| Curecanti National Recreation Area | Apr, May and Oct | Jul | 86° / 3° | 915,000 |
| Colorado National Monument | Mar, Apr and Oct | May | 93° / 21° | 486,000 |
| Dinosaur National Monument | Apr, May and Oct | Jul | 91° / 14° | 321,000 |
| Florissant Fossil Beds National Monument | Oct | Jun | 79° / 5° | 66,000 |
Colorado parks by month
| Month | Visitors, all 8 sites | Sites with mild weather |
|---|---|---|
| January | 174,000 | none |
| February | 178,000 | none |
| March | 265,000 | none |
| April | 317,000 | Mesa Verde |
| May | 647,000 | Mesa Verde, Black Canyon of the Gunnison |
| June | 1,100,000 | Rocky Mountain, Great Sand Dunes, Black Canyon of the Gunnison |
| July | 1,267,000 | none |
| August | 1,070,000 | none |
| September | 1,034,000 | none |
| October | 653,000 | Great Sand Dunes, Florissant Fossil Beds National Monument |
| November | 280,000 | none |
| December | 209,000 | none |
Weather 1991–2020 NOAA normals at each park's nearest station. Visitors National Park Service recreation visits, 2023–2025 average. Mild means an average high of 55–80°F without above-normal rain.