Grand Teton National Park weather in December
December in Grand Teton National Park: freezing, a little rain, with clean air — a hit-or-miss time to visit.
#10 of 12 months in Grand Teton National Park · #512 of 604 destinations to visit in December · comfort 47/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Grand Teton National Park climate normals — December
| Daytime high | -3°C / 27°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -10°C / 14°F | |
| Feels like (high) | -7°C / 19°F | |
| Rainfall | 80 mm / 3.1 in | 🌦 some rain |
| Rainy days | 15 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | -10°C / 14°F | |
| Sunshine | 5.1 h/day | |
| Daylight | 9 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 84.9 cm / 33.4 in | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Grand Teton National Park?
Loading map…
Grand Teton National Park in December — FAQ
- Is December a good time to visit Grand Teton National Park?
- December in Grand Teton National Park: freezing, a little rain, with clean air — a hit-or-miss time to visit. It ranks #10 of 12 months for Grand Teton National Park on SeasonMap's comfort score (47/100).
- What is the weather like in Grand Teton National Park in December?
- In December, Grand Teton National Park averages a daily high of -2.8°C and a low of -10.2°C, with about 79.7 mm of rain over roughly 14.8 rainy days.
- What is the air quality in Grand Teton National Park in December?
- Grand Teton National Park has a mean US Air Quality Index of about 40 in December.
- Does it snow in Grand Teton National Park in December?
- Grand Teton National Park sees roughly 84.9 cm of snowfall in December.