Mariposa (Yosemite) 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
Fair
Best time to visit: April – May, October
What is the weather like in Mariposa (Yosemite) in December?
In December, Mariposa (Yosemite) is cool: daytime highs average 12 °C, and nights cool down to about 2 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 146 mm in total. All in all, December is a so-so month for a holiday in Mariposa (Yosemite).
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 83 | 49 | 52 |
| Day | 16° | 12° | 12° |
| Night | 5° | 2° | 2° |
| Sun | 6 h | 5 h | 5 h |
| Rain days | 6 | 9 | 9 |
More details for December
- Daylight
- 9 h 36 min07:07 – 16:43
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC−8America/Los_Angeles
How the score comes together
- Temperatureweight 50 %46 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 30 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Mariposa (Yosemite) in December: quick answers
Is Mariposa (Yosemite) hot in December?
No. In December, Mariposa (Yosemite) is cool: daytime highs average 12 °C and nights drop to about 2 °C.
Does it rain much in Mariposa (Yosemite) in December?
Rain is frequent, with about 9 rainy days and 146 mm in total.
Mariposa (Yosemite) month by month
The whole year in Mariposa (Yosemite)All 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