September is an excellent month at Crater Lake — it ranks 2nd of the twelve here. Expect about 51% fewer visitors than July, the park's peak — 80,963 visits on average. Days run around 63°F by afternoon and 37°F at night, with 12.4 hours of daylight.
September against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| September (this page) | Excellent | 80,963 | −51% | 63°F | 37°F | 1.8" | 12.4 h |
| June (best) | Excellent | 72,067 | −56% | 57°F | 34°F | 3.7" | 15.3 h |
| July (peak crowds) | Good | 164,423 | peak | 69°F | 41°F | 0" | 15 h |
Weather figures are for the Rim Village area (about 7,000 ft) — the Crater Lake Nps HQ station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is September a good time to visit Crater Lake?
Yes — it is one of the best months of the year here. September ranks 2 of 12 at Crater Lake on crowds, weather, daylight, and access together.
How crowded is Crater Lake in September?
About 80,963 recreation visits on average — 51% below July, the park's peak.
How warm is Crater Lake in September?
Average highs around 63°F and lows around 37°F at the Crater Lake Nps HQ station, with about 2 inches of snow across the month.
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