Crater Lake National Park in September
In September, Crater Lake National Park averages a high of 63°F and a low of 37°F, with 1.9 inches of precipitation (rain plus melted snow) and 1.8 inches of snowfall. About 87,000 people visit, the 3rd busiest of 12 (moderate). Days are 12 hours 26 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 63° / 37°F
- Precipitation
- 1.9in
- Snow
- 1.8in
- Daylight
- 12h 26m
- Visitors
- 87,000
- Crowds
- Moderate
September is one of the best months to visit: mild weather with moderate crowds.
Higher or lower in the park, expect a different picture: Chiloquin 12 NW (fort Klamath), OR at 4,180 ft averages a September high of 78°F and a low of 34°F.
Weather 1991–2020 averages at Crater Lake Nps HQ, OR, 3.3 miles from the park's center, 6,485 ft. Second station lower down: Chiloquin 12 NW (fort Klamath), OR, 4,180 ft, 18.1 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Redwood National Park | 67° / 50° | Busy | Mild |
| Lassen Volcanic National Park | 72° / 41° | Busy | Mild |
| Fort Vancouver National Historic Site | 76° / 52° | Moderate | Mild |
| Mount Rainier National Park | 57° / 41° | Moderate | Mild |
| Point Reyes National Seashore | 66° / 51° | Very busy | Mild |
Closures, reservations and alerts: Crater Lake National Park on nps.gov
All twelve months at Crater Lake · National parks to visit in September