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Weather in City of Fairfax, Virginia for December 2025

Your guide to City of Fairfax weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, City of Fairfax usually enjoys a light touch of snow in December.
    According to City of Fairfax snow forecast for December 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, December 2025 in City of Fairfax is slightly cooler than the historical average by -1.5 °F.

  • The forecast for the coming days of December 2025 predicts a temperature of 8.4 °F , which is warmer than usual.

  • In general, the average temperature in City of Fairfax at the beginning of December is 4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 9.9 °F by the end of December.

    • Rain 🌧️

  • City of Fairfax experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 177 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
23
Dry days
Average rainy days
6
Rainy days
Average snowy days
2
Snow days
Average temperatures
6°/1°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

City of Fairfax Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
4°
2
Sunny
3°
3
Sunny
6°
4
Cloudy
5°
5
Overcast
2°
6
Partly cloudy
4°
7
Overcast
4°
8
Overcast
7°
9
Moderate or heavy rain shower
5°
10
Fog
9°
11
Moderate or heavy sleet
7°
12
Sunny
3°
13
Overcast
4°
14
Overcast
1°
15
Overcast
2°
16
Light rain
7°
17
Overcast
8°
18
Patchy rain possible
9°
19
Heavy rain
14°
20
Sunny
6°
21
Sunny
10°
22
Sunny
2°
23
Cloudy
4°
24
Overcast
6°
25
Patchy rain possible
7°
26
Patchy rain possible
18°
27
Patchy rain possible
12°
28
Patchy rain possible
10°
29
Sunny
4°
30
Partly cloudy
7°
31
Fog
11°

Temperatures trend during December in City of Fairfax

See the weather trend as well as the moving average line

December weather in City of Fairfax day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-1° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 3° /-1° 38.2 mm 0 cm
Dec. 3 Sunny
Sunny
 6° /-2° 0 mm 0 cm
Dec. 4 Cloudy
Cloudy
 5° /-2° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 2° /-4° 6.1 mm 4.4 cm
Dec. 6 Partly cloudy
Partly cloudy
 4° /-2° 0 mm 0 cm
Dec. 7 Overcast
Overcast
 4° /-1° 0 mm 0 cm
Dec. 8 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Dec. 9 Moderate or heavy rain shower
Moderate or heavy rain shower
 5° /-1° 10.8 mm 0 cm
Dec. 10 Fog
Fog
 9° /3° 0 mm 0 cm
Dec. 11 Moderate or heavy sleet
Moderate or heavy sleet
 7° /1° 50.8 mm 1 cm
Dec. 12 Sunny
Sunny
 3° /-1° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 4° /-1° 0 mm 0 cm
Dec. 14 Overcast
Overcast
 1° /-3° 7.8 mm 5 cm
Dec. 15 Overcast
Overcast
 2° /-3° 0 mm 0 cm
Dec. 16 Light rain
Light rain
 7° /3° 6.3 mm 0 cm
Dec. 17 Overcast
Overcast
 8° /-3° 0 mm 0 cm
Dec. 18 Patchy rain possible
Patchy rain possible
 9° /0° 1.5 mm 0 cm
Dec. 19 Heavy rain
Heavy rain
 14° /2° 93.8 mm 0 cm
Dec. 20 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Dec. 21 Sunny
Sunny
 10° /3° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 2° /-3° 0 mm 0 cm
Dec. 23 Cloudy
Cloudy
 4° /-3° 0 mm 0 cm
Dec. 24 Overcast
Overcast
 6° /2° 0 mm 0 cm
Dec. 25 Patchy rain possible
Patchy rain possible
 7° /2° 0.5 mm 0 cm
Dec. 26 Patchy rain possible
Patchy rain possible
 18° /6° 0.9 mm 0 cm
Dec. 27 Patchy rain possible
Patchy rain possible
 12° /9° 0.2 mm 0 cm
Dec. 28 Patchy rain possible
Patchy rain possible
 10° /7° 0.1 mm 0 cm
Dec. 29 Sunny
Sunny
 4° /1° 0 mm 0 cm
Dec. 30 Partly cloudy
Partly cloudy
 7° /0° 0 mm 0 cm
Dec. 31 Fog
Fog
 11° /4° 0 mm 0 cm
Next
Important Notice
Our weather forecast for City of 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 City of Fairfax forecast closer to your planned date for the most up-to-date weather information.
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City of Fairfax in December - FAQ

What are the expected maximum and minimum temperatures in City of 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 City of Fairfax during December?
Significant rainfall exceeding 177 mm is expected in City of Fairfax during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in City of Fairfax in December 2025?
City of Fairfax experiences an average snowfall of 3.22 cm during December, occurring over 2 days.
What are the typical wind conditions in City of Fairfax during December?
The average wind speed in City of Fairfax during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

City of Fairfax snow forecast December 2025

Track daily snowfall levels and discover City of Fairfax’s snowy potential this December ❄️
On average, City of Fairfax sees 2 snowy days during December, with approximately 3.2 cm of total snowfall.

December rainfall patterns in City of Fairfax

Explore the daily rainfall trends and prepare for City of Fairfaxs December weather 💧
Typically, City of Fairfax has 6 rainy days in December with a total of 177 mm of rainfall.
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Get accurate weather forecasts for City of Fairfax, located at latitude 38.846 and longitude -77.306. Stay updated with localized weather information tailored for City of Fairfax.

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