Fairfax (VA)
December
Weather in Fairfax, Virginia for December 2026
Your guide to Fairfax weather in December - trends and predictions
With an average of 5 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 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 6.4 °C by the end of December.
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Snow Forecast ❄️
Temperatures
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18
Dry days
8
Rainy days
5
Snow days
5°/0°
Temperatures
17 km/h
Avg max wind
71 %
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.
Change Month
Fairfax in December - FAQ
What are the expected maximum and minimum temperatures in Fairfax during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Fairfax during December?
Significant rainfall exceeding 178.8 mm is expected in Fairfax during December, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Fairfax in December 2026?
Fairfax experiences an average snowfall of 11.975 cm during December, occurring over 5 days.
What are the typical wind conditions in Fairfax during December?
The average wind speed in Fairfax during December is 17 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 5 snowy days during December, with approximately 12 cm of total snowfall.
December rainfall patterns in Fairfax
Explore the daily rainfall trends and prepare for Fairfaxs December weather 💧
Typically, Fairfax has 8 rainy days in December with a total of 178.8 mm of rainfall.
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