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

41°F

5°C

Humidity 82%
Wind Speed S 5 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 23 Dec 11:52 pm EST
Extended Forecast for

Fairfax VASimilar City Names

  • Overnight

    Overnight: Partly cloudy, with a low around 39. West wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 51. Northwest wind 6 to 14 mph, with gusts as high as 25 mph.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 35. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 30%.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Christmas Day

    Christmas Day: A slight chance of rain before 1pm. Mostly cloudy, with a high near 53. South wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. North wind around 7 mph.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain before 1pm, then rain, possibly mixed with sleet. High near 37. Chance of precipitation is 80%. Little or no sleet accumulation expected.

    High: 37 °F

    Chance Rain
    then
    Rain/Sleet

  • Friday Night

    Friday Night: Rain, mainly before 1am. Low around 33. Chance of precipitation is 80%.

    Low: 33 °F

    Rain

  • Saturday

    Saturday: Cloudy, with a high near 44.

    High: 44 °F

    Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 38.

    Low: 38 °F

    Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 39. West wind 6 to 9 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 51. Northwest wind 6 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 35. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 30%.
Christmas Day
A slight chance of rain before 1pm. Mostly cloudy, with a high near 53. South wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 31. North wind around 7 mph.
Friday
A chance of rain before 1pm, then rain, possibly mixed with sleet. High near 37. Chance of precipitation is 80%. Little or no sleet accumulation expected.
Friday Night
Rain, mainly before 1am. Low around 33. Chance of precipitation is 80%.
Saturday
Cloudy, with a high near 44.
Saturday Night
Cloudy, with a low around 38.
Sunday
A chance of rain. Cloudy, with a high near 54. Chance of precipitation is 50%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Sunny, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VASimilar City Names
 38.85°N 77.29°W (Elev. 400 ft)
Last Update:
9:53 pm EST Dec 23, 2025
Forecast Valid:
12am EST Dec 24, 2025-6pm EST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation