Fairfax County (Herndon)
January
Weather in Fairfax County, Virginia for January 2027
Your guide to Fairfax County weather in January - trends and predictions
With an average of 3 snowy days, Fairfax County usually enjoys a light touch of snow in January.
In general, the average temperature in Fairfax County at the beginning of January is 4.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of -4.4 °F by the end of January.
With an average of 3 rainy days, Fairfax County experiences minimal rainfall in January.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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25
Dry days
3
Rainy days
3
Snow days
2°/-4°
Temperatures
19 km/h
Avg max wind
63 %
Avg humidity
Fairfax County Weather January
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Temperatures trend during January in Fairfax County
See the weather trend as well as the moving average line
January weather in Fairfax County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 |  Partly cloudy | 0° /-3° | 0 mm | 0 cm | |
| Jan. 2 |  Overcast | 2° /-4° | 0 mm | 0 cm | |
| Jan. 3 | Overcast | 3° /-3° | 0 mm | 0 cm | |
| Jan. 4 |  Cloudy | 5° /-1° | 0 mm | 0 cm | |
| Jan. 5 | Overcast | 3° /-3° | 0 mm | 0 cm | |
| Jan. 6 |  Mist | 4° /1° | 0 mm | 0 cm | |
| Jan. 7 |  Sunny | 12° /5° | 0 mm | 0 cm | |
| Jan. 8 | Fog | 8° /-1° | 0 mm | 0 cm | |
| Jan. 9 | Mist | 8° /2° | 0 mm | 0 cm | |
| Jan. 10 |  Moderate or heavy rain shower | 10° /5° | 69.5 mm | 0 cm | |
| Jan. 11 | Cloudy | 6° /0° | 0 mm | 0 cm | |
| Jan. 12 | Partly cloudy | 6° /-1° | 0 mm | 0 cm | |
| Jan. 13 | Partly cloudy | 8° /0° | 0 mm | 0 cm | |
| Jan. 14 | Moderate rain at times | 6° /3° | 4.6 mm | 0 cm | |
| Jan. 15 | Partly cloudy | 3° /-4° | 2.7 mm | 0 cm | |
| Jan. 16 | Cloudy | 1° /-5° | 0 mm | 0 cm | |
| Jan. 17 | Overcast | 5° /0° | 0 mm | 0 cm | |
| Jan. 18 |  Moderate snow | 3° /-2° | 3 mm | 2 cm | |
| Jan. 19 | Sunny | 6° /-7° | 0 mm | 0 cm | |
| Jan. 20 | Partly cloudy | 0° /-9° | 0 mm | 0 cm | |
| Jan. 21 | Sunny | 3° /-8° | 0 mm | 0 cm | |
| Jan. 22 | Sunny | 8° /0° | 0 mm | 0 cm | |
| Jan. 23 | Overcast | 4° /-4° | 0 mm | 0 cm | |
| Jan. 24 | Overcast | -8° /-12° | 0 mm | 0 cm | |
| Jan. 25 |  Ice pellets | -3° /-9° | 129.7 mm | 93.7 cm | |
| Jan. 26 |  Freezing fog | -2° /-8° | 9.4 mm | 6.8 cm | |
| Jan. 27 | Sunny | -2° /-12° | 0 mm | 0 cm | |
| Jan. 28 | Overcast | -6° /-12° | 0 mm | 0 cm | |
| Jan. 29 | Partly cloudy | -5° /-12° | 0 mm | 0 cm | |
| Jan. 30 | Overcast | -7° /-14° | 0 mm | 0 cm | |
| Jan. 31 | Cloudy | -6° /-13° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Fairfax County in January 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 County forecast closer to your planned date for the most up-to-date weather information.
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Fairfax County in January - FAQ
What are the expected maximum and minimum temperatures in Fairfax County during January?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Fairfax County during January?
Significant rainfall exceeding 218.9 mm is expected in Fairfax County during January, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Fairfax County in January 2027?
Fairfax County experiences an average snowfall of 102.5 cm during January, occurring over 3 days.
What are the typical wind conditions in Fairfax County during January?
The average wind speed in Fairfax County during January is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
Fairfax County snow forecast January 2027
Track daily snowfall levels and discover Fairfax County’s snowy potential this January ❄️
On average, Fairfax County sees 3 snowy days during January, with approximately 102.5 cm of total snowfall.
January rainfall patterns in Fairfax County
Explore the daily rainfall trends and prepare for Fairfax Countys January weather 💧
Typically, Fairfax County has 3 rainy days in January with a total of 218.9 mm of rainfall.
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Where is Fairfax County?Get accurate weather forecasts for Fairfax County, located at latitude 38.97 and longitude -77.386. Stay updated with localized weather information tailored for Fairfax County.
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