National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

49°F

9°C

Humidity 38%
Wind Speed S 9 mph
Barometer 29.71 in (1006.2 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 14 Jan 1:52 am EST
Extended Forecast for

Fairfax VA

  • Overnight

    Overnight: Cloudy, with a low around 41. Southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Cloudy

  • Wednesday

    Wednesday: A slight chance of rain before 10am. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain then
    Cloudy

  • Wednesday Night

    Wednesday Night: Rain likely before 3am, then a slight chance of snow between 3am and 4am. Cloudy, with a low around 24. Light and variable wind becoming northwest 9 to 14 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 24 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 31. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18. West wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain and snow before 1pm. Mostly sunny, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 41. Southwest wind around 10 mph, with gusts as high as 21 mph.
Wednesday
A slight chance of rain before 10am. Cloudy, with a high near 52. Southwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday Night
Rain likely before 3am, then a slight chance of snow between 3am and 4am. Cloudy, with a low around 24. Light and variable wind becoming northwest 9 to 14 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Mostly sunny, with a high near 31. Northwest wind 14 to 16 mph, with gusts as high as 29 mph.
Thursday Night
Mostly clear, with a low around 18. West wind 8 to 13 mph, with gusts as high as 22 mph.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A chance of rain and snow before 1pm. Mostly sunny, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 18.
M.L.King Day
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.83°N 77.29°W (Elev. 348 ft)
Last Update:
12:53 am EST Jan 14, 2026
Forecast Valid:
2am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation