Lassen Volcanic National Park weather in December
December in Lassen Volcanic National Park: freezing, soaked, with clean air — a fair time to visit.
#12 of 12 months in Lassen Volcanic National Park · #484 of 604 destinations to visit in December · comfort 50/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Lassen Volcanic National Park climate normals — December
| Daytime high | 2°C / 36°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -5°C / 22°F | |
| Feels like (high) | -2°C / 28°F | |
| Rainfall | 214 mm / 8.4 in | ⛈ soaked |
| Rainy days | 13 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | -5°C / 23°F | |
| Sunshine | 5.5 h/day | |
| Daylight | 9.3 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 111 cm / 43.7 in | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Lassen Volcanic National Park?
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Lassen Volcanic National Park in December — FAQ
- Is December a good time to visit Lassen Volcanic National Park?
- December in Lassen Volcanic National Park: freezing, soaked, with clean air — a fair time to visit. It ranks #12 of 12 months for Lassen Volcanic National Park on SeasonMap's comfort score (50/100).
- What is the weather like in Lassen Volcanic National Park in December?
- In December, Lassen Volcanic National Park averages a daily high of 2.1°C and a low of -5.3°C, with about 213.7 mm of rain over roughly 13.4 rainy days.
- What is the air quality in Lassen Volcanic National Park in December?
- Lassen Volcanic National Park has a mean US Air Quality Index of about 36 in December.
- Does it snow in Lassen Volcanic National Park in December?
- Lassen Volcanic National Park sees roughly 111 cm of snowfall in December.