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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

72°F

22°C

Humidity 91%
Wind Speed N 6 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 28 Aug 2:52 am EDT
Extended Forecast for

Fairfax VASimilar City Names

  • Overnight

    Overnight: Scattered showers and thunderstorms before 5am. Mostly cloudy, with a low around 68. Southwest wind around 5 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 85. North wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 85 °F

    Isolated
    T-storms then
    Scattered
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. North wind 6 to 8 mph.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. North wind 6 to 8 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Southeast wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Overnight
Scattered showers and thunderstorms before 5am. Mostly cloudy, with a low around 68. Southwest wind around 5 mph. Chance of precipitation is 40%.
Friday
Scattered showers and thunderstorms, mainly between 2pm and 5pm. Partly sunny, with a high near 85. North wind 6 to 8 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 65. North wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 84. North wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 66. Southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 92.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VASimilar City Names
 38.85°N 77.29°W (Elev. 400 ft)
Last Update:
2:22 am EDT Aug 28, 2026
Forecast Valid:
3am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
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Additional Resources

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Chance of Precipitation