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.

Partly Cloudy

91°F

33°C

Humidity 49%
Wind Speed S 12 mph
Barometer 30.23 in (1023.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 18 Jun 2:52 pm EDT
Extended Forecast for

Herndon VA

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southeast wind 6 to 10 mph.

    Low: 68 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 90. South wind 6 to 10 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 70. Southeast wind 6 to 8 mph.

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 92. South wind 5 to 8 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. South wind around 6 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Chance of precipitation is 30%.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southeast wind 6 to 10 mph.
Juneteenth
Sunny, with a high near 90. South wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 70. Southeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 92. South wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 72. South wind around 6 mph.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 72.
Saturday
A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Sunday
Mostly sunny and hot, with a high near 97.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 ft)
Last Update:
1:29 pm EDT Jun 18, 2024
Forecast Valid:
3pm EDT Jun 18, 2024-6pm EDT Jun 25, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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