Yellowstone National Park weather in December
December in Yellowstone National Park: freezing, a little rain, with clean air — one of the weakest months to visit.
#12 of 12 months in Yellowstone National Park · #550 of 604 destinations to visit in December · comfort 37/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Yellowstone National Park climate normals — December
| Daytime high | -6°C / 22°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -11°C / 12°F | |
| Feels like (high) | -11°C / 12°F | |
| Rainfall | 71 mm / 2.8 in | 🌦 some rain |
| Rainy days | 15 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | -11°C / 12°F | |
| Sunshine | 5.2 h/day | |
| Daylight | 8.9 h | |
| Wind | 17 km/h / 11 mph | |
| Snowfall | 85.4 cm / 33.6 in | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Yellowstone National Park in December — FAQ
- Is December a good time to visit Yellowstone National Park?
- December in Yellowstone National Park: freezing, a little rain, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Yellowstone National Park on SeasonMap's comfort score (37/100).
- What is the weather like in Yellowstone National Park in December?
- In December, Yellowstone National Park averages a daily high of -5.6°C and a low of -10.9°C, with about 70.7 mm of rain over roughly 15 rainy days.
- What is the air quality in Yellowstone National Park in December?
- Yellowstone National Park has a mean US Air Quality Index of about 42 in December.
- Does it snow in Yellowstone National Park in December?
- Yellowstone National Park sees roughly 85.4 cm of snowfall in December.