Fairfield (CA)
December
Weather in Fairfield, California for December 2026
Your guide to Fairfield weather in December - trends and predictions
In general, the average temperature in Fairfield at the beginning of December is 15.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 13.1 °F by the end of December.
The climate of Fairfield in December is notably wet, with an average of 11 rainy days, and a total of 225 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
13°/6°
Temperatures
10 km/h
Avg max wind
80 %
Avg humidity
Fairfield Weather December
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Temperatures trend during December in Fairfield
See the weather trend as well as the moving average line
December weather in Fairfield day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 16° /5° | 0 mm | 5 | |
| Dec. 2 |  Sunny | 17° /6° | 0 mm | 5 | |
| Dec. 3 |  Partly cloudy | 17° /6° | 0 mm | 5 | |
| Dec. 4 | Sunny | 16° /5° | 0 mm | 5 | |
| Dec. 5 | Overcast | 15° /6° | 0 mm | 4 | |
| Dec. 6 | Overcast | 17° /7° | 0 mm | 4 | |
| Dec. 7 | Overcast | 13° /5° | 0 mm | 3 | |
| Dec. 8 |  Cloudy | 14° /6° | 0 mm | 4 | |
| Dec. 9 | Sunny | 14° /6° | 0 mm | 4 | |
| Dec. 10 | Sunny | 15° /3° | 0 mm | 4 | |
| Dec. 11 | Overcast | 14° /3° | 0 mm | 3 | |
| Dec. 12 |  Moderate or heavy rain shower | 15° /6° | 15.5 mm | 4 | |
| Dec. 13 |  Heavy rain at times | 15° /7° | 3.2 mm | 4 | |
| Dec. 14 | Moderate or heavy rain shower | 14° /5° | 46.7 mm | 4 | |
| Dec. 15 | Overcast | 13° /5° | 0 mm | 3 | |
| Dec. 16 | Moderate or heavy rain shower | 13° /7° | 6.8 mm | 3 | |
| Dec. 17 | Overcast | 15° /9° | 0 mm | 4 | |
| Dec. 18 | Overcast | 12° /6° | 0 mm | 3 | |
| Dec. 19 | Overcast | 12° /7° | 0 mm | 3 | |
| Dec. 20 | Overcast | 12° /8° | 6.6 mm | 2 | |
| Dec. 21 | Moderate or heavy rain shower | 12° /10° | 56.8 mm | 2 | |
| Dec. 22 | Moderate rain at times | 14° /10° | 15.1 mm | 2 | |
| Dec. 23 | Overcast | 16° /12° | 0.9 mm | 2 | |
| Dec. 24 | Moderate or heavy rain shower | 14° /9° | 30.7 mm | 2 | |
| Dec. 25 | Cloudy | 13° /7° | 31.8 mm | 2 | |
| Dec. 26 | Heavy rain at times | 13° /9° | 15.3 mm | 2 | |
| Dec. 27 | Moderate or heavy rain shower | 12° /9° | 12.8 mm | 2 | |
| Dec. 28 | Moderate rain at times | 15° /6° | 0.5 mm | 3 | |
| Dec. 29 | Moderate or heavy rain shower | 14° /5° | 4.5 mm | 2 | |
| Dec. 30 | Cloudy | 14° /4° | 0 mm | 2 | |
| Dec. 31 |  Mist | 11° /4° | 18 mm | 1 | |
| Next | |||||
Important Notice
Our weather forecast for Fairfield 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 Fairfield forecast closer to your planned date for the most up-to-date weather information.
Change Month
Fairfield in December - FAQ
What are the expected maximum and minimum temperatures in Fairfield during December?
During December, expect a variety of temperatures with highs around 13° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Fairfield during December?
Significant rainfall exceeding 225 mm is expected in Fairfield during December, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fairfield during December?
The average wind speed in Fairfield during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Fairfield
Explore the daily rainfall trends and prepare for Fairfields December weather 💧
Typically, Fairfield has 11 rainy days in December with a total of 225 mm of rainfall.
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