Crater Lake weather, month by month
- Aug high
- 69°F
- hottest month
- Feb low
- 19°F
- coldest month
- Rain + snowmelt
- 66.8in / yr
- wettest: Dec
- Snowfall
- 463.1in / yr
- Sep–Jun
- Days ≥ 90°F
- 0/ yr
- Nights ≤ 32°F
- 238/ yr
Crater Lake NPS HQ
Month by month
| Month | High | Low | Rain | Snow | Wet days | Sunrise | Sunset | Daylight | Crowds |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 33° | 20° | 10.1″ | 86.5″ | 18 | 7:37 AM | 4:59 PM | 9h 22m | 4 |
| Feb | 34° | 19° | 7.5″ | 68.9″ | 17 | 7:06 AM | 5:39 PM | 10h 33m | 4 |
| Mar | 36° | 20° | 7.8″ | 71.9″ | 18 | 7:21 AM | 7:14 PM | 11h 53m | 7 |
| Apr | 40° | 23° | 6.2″ | 48.7″ | 17 | 6:27 AM | 7:50 PM | 13h 23m | 10 |
| May | 49° | 29° | 3.6″ | 14.5″ | 12 | 5:46 AM | 8:24 PM | 14h 39m | 22 |
| Jun | 57° | 34° | 2.3″ | 3.7″ | 7 | 5:29 AM | 8:49 PM | 15h 20m | 44 |
| Jul | 69° | 41° | 0.8″ | — | 4 | 5:43 AM | 8:46 PM | 15h 03m | 100 |
| Aug | 69° | 42° | 0.8″ | — | 4 | 6:14 AM | 8:12 PM | 13h 57m | 76 |
| Sep | 63° | 37° | 1.9″ | 1.8″ | 5 | 6:48 AM | 7:20 PM | 12h 32m | 49 |
| Oct | 51° | 30° | 4.8″ | 17.2″ | 11 | 7:22 AM | 6:27 PM | 11h 05m | 23 |
| Nov | 38° | 23° | 9.6″ | 59.3″ | 17 | 7:01 AM | 4:46 PM | 9h 45m | 7 |
| Dec | 33° | 19° | 11.3″ | 90.6″ | 18 | 7:33 AM | 4:35 PM | 9h 02m | 4 |
Sweet spot: June and September combine average highs between 55°F and 85°F with crowds under 60% of the peak month. Check what is open in those months — quiet can also mean closed roads.
How to read this
These are NOAA’s official 1991–2020 climate normals for one weather station, not a model of the whole park. The station is the one with complete temperature and precipitation normals nearest to a visitor center. Highs and lows are daily averages for the month; “wet days” are days with at least 0.01 inch of precipitation. Mountain parks can be 10–20 °F cooler at their high points than at the station, and the NPS weather page for Crater Lake is the place for current conditions and seasonal closures.
Sunrise and sunset are computed with the NOAA solar equations for the park’s coordinates and shown in America/Los Angeles time for the 15th of each month of 2027; they are accurate to about a minute.
Sources · 3
- 1.U.S. Climate Normals 1991–2020 — monthly normals station inventory · National Centers for Environmental Information (NOAA)
- 2.Crater Lake National Park — Weather (nps.gov) · National Park Service
- 3.Crater Lake National Park — Visitor Use Statistics · National Park Service (IRMA)
FAQ
Crater Lake weather questions
- What is the hottest month at Crater Lake?
- August, with an average high of 69°F and an average low of 42°F at Crater Lake NPS HQ (NOAA 1991–2020 normals).
- How cold does Crater Lake get in winter?
- February is the coldest month, averaging a low of 19°F and a high of 34°F at Crater Lake NPS HQ. About 238 nights a year drop to freezing or below.
- Does it snow at Crater Lake?
- Yes. Crater Lake NPS HQ averages 463.1 inches of snow a year, mostly in January, February, March, April, May, June, September, October, November and December. Higher ground in the park gets more.
- When is the rainy season at Crater Lake?
- December is the wettest month on average (11.3 inches of precipitation at Crater Lake NPS HQ); the station's annual total is 66.8 inches.
- How many hours of daylight does Crater Lake get?
- About 15h 20m on June 15 and 9h 02m on December 15 (sunrise 5:29 AM, sunset 8:49 PM in June; 7:33 AM to 4:35 PM in December, America/Los Angeles time).
- What is the best month to visit Crater Lake for weather?
- By NOAA's normals, average highs sit between 55°F and 85°F in June, July, August and September. Of those, June and September are also well below the park's peak crowds. Weather in the park varies with elevation; this is the Crater Lake NPS HQ station.
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