January is a good month at Lassen Volcanic — it ranks 10th of the twelve here. Expect about 92% fewer visitors than July, the park's peak — 8,093 visits on average. Days run around 41°F by afternoon and 22°F at night, with 9.6 hours of daylight.
January against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| January (this page) | Good | 8,093 | −92% | 41°F | 22°F | — | 9.6 h |
| May (best) | Excellent | 33,897 | −69% | 61°F | 35°F | — | 14.4 h |
| July (peak crowds) | Good | 107,728 | peak | 79°F | 46°F | — | 14.8 h |
Weather figures are for the Manzanita Lake area (5,900 ft) — the Manzanita Lake 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 January a good time to visit Lassen Volcanic?
It is a reasonable month — the park has stronger ones, but the records don't argue against it. January ranks 10 of 12 at Lassen Volcanic on crowds, weather, daylight, and access together.
How crowded is Lassen Volcanic in January?
About 8,093 recreation visits on average — 92% below July, the park's peak.
How warm is Lassen Volcanic in January?
Average highs around 41°F and lows around 22°F at the Manzanita Lake station.
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