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

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair and Breezy

9°C

49°F

Humidity 35%
Wind Speed NW 33 G 52 km/h
Barometer 1013.3 mb (29.92 in)
Dewpoint -6°C (22°F)
Visibility 16 km
Wind Chill6°C (42°F)
Last update 21 Mar 11:52 am EDT
Extended Forecast for

Herndon VA

  • This Afternoon

    This Afternoon: Sunny, with a high near 14. Breezy, with a northwest wind 26 to 34 km/h, with gusts as high as 48 km/h.

    High: 14 °C

    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 3. West wind 5 to 10 km/h becoming south after midnight.

    Low: 3 °C

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 19. West wind 13 to 18 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 47 km/h.

    High: 19 °C

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 2. Northwest wind 13 to 23 km/h, with gusts as high as 35 km/h.

    Low: 2 °C

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 14. North wind 10 to 13 km/h becoming south in the afternoon.

    High: 14 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 8. Chance of precipitation is 50%.

    Low: 8 °C

    Chance
    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 19. Chance of precipitation is 50%.

    High: 19 °C

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 4.

    Low: 4 °C

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 14.

    High: 14 °C

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 14. Breezy, with a northwest wind 26 to 34 km/h, with gusts as high as 48 km/h.
Tonight
Increasing clouds, with a low around 3. West wind 5 to 10 km/h becoming south after midnight.
Saturday
Partly sunny, with a high near 19. West wind 13 to 18 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 47 km/h.
Saturday Night
Partly cloudy, with a low around 2. Northwest wind 13 to 23 km/h, with gusts as high as 35 km/h.
Sunday
Mostly sunny, with a high near 14. North wind 10 to 13 km/h becoming south in the afternoon.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 8. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 19. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 4.
Tuesday
Partly sunny, with a high near 14.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 4. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 13.
Wednesday Night
Partly cloudy, with a low around 3.
Thursday
Mostly sunny, with a high near 14.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 m)
Last Update:
10:29 am EDT Mar 21, 2025
Forecast Valid:
12pm EDT Mar 21, 2025-6pm EDT Mar 27, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation