West Yellowstone weather in December
Temperature, rain and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: June – September
What is the weather like in West Yellowstone in December?
In December, West Yellowstone is freezing cold: daytime highs average −6 °C, and nights often drop below freezing (−14 °C). The sun is scarce, with only about 3 hours a day. Precipitation, often as snow, falls on about 14 days, totalling 87 mm. Snow falls on about 15 days. All in all, December is not an ideal month for a holiday in West Yellowstone.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 16 | 8 | 10 |
| Day | 0° | −6° | −6° |
| Night | −10° | −14° | −13° |
| Sun | 4 h | 3 h | 3 h |
| Rain days | 12 | 14 | 14 |
More details for December
- Daylight
- 8 h 51 min07:54 – 16:45
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 76 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 15 days1 cm or more of fresh snowAll months
- Time zone
- UTC−7America/Denver
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %26 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
West Yellowstone in December: quick answers
Is West Yellowstone hot in December?
No. In December, West Yellowstone is freezing cold: daytime highs average −6 °C and nights drop to about −14 °C.
Does it rain much in West Yellowstone in December?
It rains often – on about 14 days, adding up to 87 mm.
West Yellowstone month by month
The whole year in West YellowstoneAll destinations: USAWhere to go in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences