Mariposa County (Yosemite Valley)
December
Weather in Mariposa County for December 2025
Your guide to Mariposa County weather in December - trends and predictions
Mariposa County typically experiences moderate snowfall in December, with an average of 6 snowy days.
In general, the average temperature in Mariposa County at the beginning of December is 8.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 4.6 °F by the end of December.
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Snow Forecast ❄️
Temperatures
More
25
Dry days
0
Rainy days
6
Snow days
7°/1°
Temperatures
12 km/h
Avg max wind
52 %
Avg humidity
Mariposa County in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  9° | 2  10° | 3  8° | 4 9° | 5 8° | 6 10° | |
| 7 8° | 8 8° | 9 9° | 10 10° | 11 10° | 12 4° | 13 4° |
| 14 4° | 15  8° | 16 8° | 17  9° | 18  9° | 19  8° | 20 6° |
| 21  5° | 22 6° | 23 6° | 24 5° | 25 6° | 26 5° | 27 5° |
| 28 7° | 29 5° | 30 2° | 31 2° |
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Temperatures trend during December in Mariposa County
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Overcast | 9° /4° | 0 mm | 0 cm | |
| Dec. 2 | Sunny | 10° /4° | 0 mm | 0 cm | |
| Dec. 3 | Cloudy | 8° /3° | 0 mm | 0 cm | |
| Dec. 4 | Sunny | 9° /3° | 0 mm | 0 cm | |
| Dec. 5 | Overcast | 8° /2° | 0 mm | 0 cm | |
| Dec. 6 | Sunny | 10° /2° | 0 mm | 0 cm | |
| Dec. 7 | Overcast | 8° /0° | 0 mm | 0 cm | |
| Dec. 8 | Cloudy | 8° /5° | 0 mm | 0 cm | |
| Dec. 9 | Cloudy | 9° /-1° | 0 mm | 0 cm | |
| Dec. 10 | Overcast | 10° /1° | 0 mm | 0 cm | |
| Dec. 11 | Overcast | 10° /3° | 0 mm | 0 cm | |
| Dec. 12 | Sunny | 4° /-3° | 18.4 mm | 13.3 cm | |
| Dec. 13 | Sunny | 4° /-3° | 1.5 mm | 1.1 cm | |
| Dec. 14 | Overcast | 4° /-5° | 25 mm | 13.3 cm | |
| Dec. 15 | Partly cloudy | 8° /-3° | 0.9 mm | 0.7 cm | |
| Dec. 16 | Sunny | 8° /1° | 0 mm | 0 cm | |
| Dec. 17 | Patchy rain possible | 9° /2° | 2.9 mm | 2 cm | |
| Dec. 18 | Moderate or heavy snow showers | 9° /2° | 14.4 mm | 10.3 cm | |
| Dec. 19 | Moderate or heavy snow with thunder | 8° /3° | 17.6 mm | 12.7 cm | |
| Dec. 20 | Moderate or heavy snow showers | 6° /2° | 4.1 mm | 2.9 cm | |
| Dec. 21 | Patchy moderate snow | 5° /1° | 1.8 mm | 1.2 cm | |
| Dec. 22 | Patchy rain possible | 6° /0° | 9 mm | 4.5 cm | |
| Dec. 23 | Sunny | 6° /0° | 0 mm | 0 cm | |
| Dec. 24 | Partly cloudy | 5° /-4° | 27.3 mm | 19.7 cm | |
| Dec. 25 | Patchy rain possible | 6° /-4° | 0 mm | 0 cm | |
| Dec. 26 | Partly cloudy | 5° /0° | 6.6 mm | 4.7 cm | |
| Dec. 27 | Patchy rain possible | 5° /-1° | 39 mm | 28.1 cm | |
| Dec. 28 | Cloudy | 7° /0° | 0.5 mm | 0.3 cm | |
| Dec. 29 | Patchy rain possible | 5° /-2° | 15.5 mm | 11.2 cm | |
| Dec. 30 | Moderate or heavy snow with thunder | 2° /-5° | 12.1 mm | 8.7 cm | |
| Dec. 31 | Light snow showers | 2° /-4° | 0.1 mm | 0 cm | |
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Important Notice
Our weather forecast for Mariposa County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mariposa County forecast closer to your planned date for the most up-to-date weather information.
Mariposa County in December - FAQ
What are the expected maximum and minimum temperatures in Mariposa County during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 1°.
How much rainfall should be expected in Mariposa County during December?
Significant rainfall exceeding 101.3 mm is expected in Mariposa County during December, occurring over more than 0 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Mariposa County in December 2025?
Mariposa County experiences an average snowfall of 72.46 cm during December, occurring over 6 days.
What are the typical wind conditions in Mariposa County during December?
The average wind speed in Mariposa County during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
Mariposa County snow forecast December 2025
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December rainfall patterns in Mariposa County
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Where is Mariposa County?Get accurate weather forecasts for Mariposa County, located at latitude 37.741 and longitude -119.578. Stay updated with localized weather information tailored for Mariposa County.
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