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.

Overcast and Breezy

3°C

37°F

Humidity 42%
Wind Speed NW 39 G 52 km/h
Barometer 999.3 mb (29.51 in)
Dewpoint -9°C (16°F)
Visibility 16 km
Wind Chill-3°C (26°F)
Last update 15 Jan 3:52 am EST
Extended Forecast for

Reston VA

  • Today

    Today: Mostly sunny, with a high near 0. West wind 21 to 27 km/h, with gusts as high as 48 km/h.

    High: 0 °C

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -7. West wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight. Winds could gust as high as 55 km/h.

    Low: -7 °C

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 2. South wind 11 to 16 km/h, with gusts as high as 32 km/h.

    High: 2 °C

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. South wind 13 to 16 km/h, with gusts as high as 32 km/h.

    Low: -1 °C

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow, mixing with rain after 10am, then gradually ending. Partly sunny, with a high near 7. Southwest wind 11 to 16 km/h, with gusts as high as 32 km/h. Chance of precipitation is 40%.

    High: 7 °C

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around -3. Chance of precipitation is 20%.

    Low: -3 °C

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Mostly cloudy, with a high near -1. Chance of precipitation is 30%.

    High: -1 °C

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -8.

    Low: -8 °C

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 1.

    High: 1 °C

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 0. West wind 21 to 27 km/h, with gusts as high as 48 km/h.
Tonight
Mostly clear, with a low around -7. West wind 21 to 26 km/h decreasing to 13 to 18 km/h after midnight. Winds could gust as high as 55 km/h.
Friday
Increasing clouds, with a high near 2. South wind 11 to 16 km/h, with gusts as high as 32 km/h.
Friday Night
Mostly cloudy, with a low around -1. South wind 13 to 16 km/h, with gusts as high as 32 km/h.
Saturday
A chance of snow, mixing with rain after 10am, then gradually ending. Partly sunny, with a high near 7. Southwest wind 11 to 16 km/h, with gusts as high as 32 km/h. Chance of precipitation is 40%.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around -3. Chance of precipitation is 20%.
Sunday
A chance of snow before 1pm. Mostly cloudy, with a high near -1. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around -8.
M.L.King Day
Sunny, with a high near 1.
Monday Night
Partly cloudy, with a low around -10.
Tuesday
Sunny, with a high near -4.
Tuesday Night
Mostly clear, with a low around -12.
Wednesday
Mostly sunny, with a high near 0.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Reston VA
 38.97°N 77.36°W (Elev. 430 m)
Last Update:
3:53 am EST Jan 15, 2026
Forecast Valid:
4am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
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Additional Resources

Radar & Satellite Image

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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