Fairfax (VA)
December
Weather in Fairfax, Virginia for December 2026
Your guide to Fairfax weather in December - trends and predictions
With an average of 2 snowy days, Fairfax usually enjoys a light touch of snow in December.
In general, the average temperature in Fairfax at the beginning of December is 4 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 6.4 °F by the end of December.
Fairfax experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 177 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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23
Dry days
6
Rainy days
2
Snow days
6°/1°
Temperatures
16 km/h
Avg max wind
73 %
Avg humidity
Fairfax Weather December
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Temperatures trend during December in Fairfax
See the weather trend as well as the moving average line
December weather in Fairfax day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 4° /-1° | 0 mm | 0 cm | |
| Dec. 2 |  Sunny | 3° /-1° | 38.2 mm | 0 cm | |
| Dec. 3 | Sunny | 6° /-2° | 0 mm | 0 cm | |
| Dec. 4 |  Cloudy | 5° /-2° | 0 mm | 0 cm | |
| Dec. 5 | Overcast | 2° /-4° | 6.1 mm | 4.4 cm | |
| Dec. 6 |  Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 7 | Overcast | 4° /-1° | 0 mm | 0 cm | |
| Dec. 8 | Overcast | 7° /-1° | 0 mm | 0 cm | |
| Dec. 9 |  Moderate or heavy rain shower | 5° /-1° | 10.8 mm | 0 cm | |
| Dec. 10 |  Fog | 9° /3° | 0 mm | 0 cm | |
| Dec. 11 |  Moderate or heavy sleet | 7° /1° | 50.8 mm | 1 cm | |
| Dec. 12 | Sunny | 3° /-1° | 0 mm | 0 cm | |
| Dec. 13 | Overcast | 4° /-1° | 0 mm | 0 cm | |
| Dec. 14 | Overcast | 1° /-3° | 7.8 mm | 5 cm | |
| Dec. 15 | Overcast | 2° /-3° | 0 mm | 0 cm | |
| Dec. 16 |  Light rain | 6° /0° | 3.1 mm | 0 cm | |
| Dec. 17 | Overcast | 9° /3° | 0 mm | 0 cm | |
| Dec. 18 | Fog | 9° /1° | 0.8 mm | 0 cm | |
| Dec. 19 | Sunny | 11° /0° | 23 mm | 0 cm | |
| Dec. 20 | Mist | 3° /-1° | 0 mm | 0 cm | |
| Dec. 21 | Cloudy | 5° /-1° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | 3° /-4° | 0 mm | 0 cm | |
| Dec. 23 | Overcast | 4° /-3° | 5.1 mm | 0 cm | |
| Dec. 24 |  Patchy moderate snow | 6° /1° | 1.9 mm | 0.6 cm | |
| Dec. 25 | Overcast | 4° /0° | 10.9 mm | 0.9 cm | |
| Dec. 26 | Cloudy | 2° /-1° | 0 mm | 0 cm | |
| Dec. 27 | Overcast | 4° /0° | 0 mm | 0 cm | |
| Dec. 28 | Light rain | 5° /0° | 6.8 mm | 0 cm | |
| Dec. 29 | Mist | 14° /3° | 4.3 mm | 0 cm | |
| Dec. 30 | Partly cloudy | 9° /3° | 9.3 mm | 0 cm | |
| Dec. 31 | Fog | 7° /0° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Fairfax 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 Fairfax forecast closer to your planned date for the most up-to-date weather information.
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Fairfax in December - FAQ
What are the expected maximum and minimum temperatures in Fairfax during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below 1°.
How much rainfall should be expected in Fairfax during December?
Significant rainfall exceeding 177 mm is expected in Fairfax during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Fairfax in December 2026?
Fairfax experiences an average snowfall of 3.22 cm during December, occurring over 2 days.
What are the typical wind conditions in Fairfax during December?
The average wind speed in Fairfax during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
Fairfax snow forecast December 2026
Track daily snowfall levels and discover Fairfax’s snowy potential this December ❄️
On average, Fairfax sees 2 snowy days during December, with approximately 3.2 cm of total snowfall.
December rainfall patterns in Fairfax
Explore the daily rainfall trends and prepare for Fairfaxs December weather 💧
Typically, Fairfax has 6 rainy days in December with a total of 177 mm of rainfall.
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