Lake Roosevelt National Recreation Area in September
In September, Lake Roosevelt National Recreation Area averages a high of 73°F and a low of 40°F, with 0.5 inches of precipitation (rain plus melted snow). About 115,000 people visit, the 4th busiest of 12 (moderate). Days are 12 hours 30 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 73° / 40°F
- Precipitation
- 0.5in
- Snow
- 0in
- Daylight
- 12h 30m
- Visitors
- 115,000
- Crowds
- Moderate
September is one of the best months to visit: mild weather with moderate crowds.
Weather 1991–2020 averages at Davenport, WA, 19.6 miles from the park's center, 2,369 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Ross Lake National Recreation Area | 70° / 50° | Busy | Mild |
| North Cascades National Park | 71° / 50° | Busy | Mild |
| Mount Rainier National Park | 57° / 41° | Moderate | Mild |
| Glacier National Park | 68° / 41° | Busy | Mild |
| Olympic National Park | 68° / 48° | Very busy | Mild |
Closures, reservations and alerts: Lake Roosevelt National Recreation Area on nps.gov
All twelve months at Lake Roosevelt National Recreation Area · National parks to visit in September