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Weather in Fairfax, Virginia for December 2026

Your guide to Fairfax weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 5 snowy days, Fairfax usually enjoys a light touch of snow in December.

  • Temperatures

  • 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.

  • More

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Average dry days
18
Dry days
Average rainy days
8
Rainy days
Average snowy days
5
Snow days
Average temperatures
5°/0°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
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
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
6° /0° 3.1 mm 0 cm
Dec. 17 Overcast
Overcast
9° /3° 0 mm 0 cm
Dec. 18 Fog
Fog
9° /1° 0.8 mm 0 cm
Dec. 19 Sunny
Sunny
11° /0° 23 mm 0 cm
Dec. 20 Mist
Mist
3° /-1° 0 mm 0 cm
Dec. 21 Cloudy
Cloudy
5° /-1° 0 mm 0 cm
Dec. 22 Sunny
Sunny
3° /-4° 0 mm 0 cm
Dec. 23 Overcast
Overcast
4° /-3° 5.1 mm 0 cm
Dec. 24 Patchy moderate snow
Patchy moderate snow
6° /1° 1.9 mm 0.6 cm
Dec. 25 Overcast
Overcast
4° /0° 10.9 mm 0.9 cm
Dec. 26 Cloudy
Cloudy
2° /-1° 0 mm 0 cm
Dec. 27 Overcast
Overcast
4° /0° 0 mm 0 cm
Dec. 28 Light rain
Light rain
5° /0° 6.8 mm 0 cm
Dec. 29 Mist
Mist
14° /3° 4.3 mm 0 cm
Dec. 30 Partly cloudy
Partly cloudy
9° /3° 9.3 mm 0 cm
Dec. 31 Fog
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.

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.

Quick links

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Location coordinates Where is Fairfax?

Get accurate weather forecasts for Fairfax, located at latitude 38.846 and longitude -77.306. Stay updated with localized weather information tailored for Fairfax.

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