Rocky Mountain National Park in August
In August, Rocky Mountain National Park averages a high of 73°F and a low of 38°F, with 2.1 inches of precipitation (rain plus melted snow). About 652,000 people visit, the 2nd busiest of 12 (very busy). Days are 13 hours 46 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 73° / 38°F
- Precipitation
- 2.1in
- Snow
- 0in
- Daylight
- 13h 46m
- Visitors
- 652,000
- Crowds
- Very busy
Best months for weather and crowds instead: June (very busy).
Higher or lower in the park, expect a different picture: Waterdale, CO at 5,230 ft averages a August high of 84°F and a low of 53°F.
Weather 1991–2020 averages at Grand Lake 1 NW, CO, 9.2 miles from the park's center, 8,720 ft. Second station lower down: Waterdale, CO, 5,230 ft, 26.4 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in August
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Black Canyon of the Gunnison National Park | 81° / 52° | Busy | Hot |
| Great Sand Dunes National Park | 78° / 50° | Busy | Mild, wet |
| Arches National Park | 96° / 68° | Busy | Very hot |
| Wind Cave National Park | 84° / 55° | Very busy | Hot |
| Mesa Verde National Park | 84° / 57° | Busy | Hot |
Closures, reservations and alerts: Rocky Mountain National Park on nps.gov
All twelve months at Rocky Mountain · National parks to visit in August