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

Areas of Dangerous Heat and Heavy Rainfall Today

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley today. Heat Advisories remain in effect. Heavy to excessive rainfall today could bring areas of flooding to parts of the northern High Plains and Midwest into the Ohio Valley. Flood Watches remain in effect. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

80°F

27°C

Humidity 71%
Wind Speed SW 8 mph
Barometer 29.88 in (1011.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Sep 5:52 pm EDT
Extended Forecast for

Oakton VA

  • Tonight

    Tonight: Scattered showers and thunderstorms before 11pm, then isolated showers between 11pm and 2am. Mostly cloudy, with a low around 64. West wind 5 to 7 mph becoming light and variable. Chance of precipitation is 40%.

    Low: 64 °F

    Scattered
    T-storms then
    Isolated
    Showers

  • Monday

    Monday: Isolated showers after 2pm. Mostly cloudy, with a high near 75. Northeast wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 75 °F

    Partly Sunny
    then Isolated
    Showers

  • Monday Night

    Monday Night: Showers, mainly after 8pm. Low around 60. East wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 66. Northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely. Cloudy, with a low around 55. Northeast wind around 11 mph. Chance of precipitation is 70%.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 20%.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers and thunderstorms before 11pm, then isolated showers between 11pm and 2am. Mostly cloudy, with a low around 64. West wind 5 to 7 mph becoming light and variable. Chance of precipitation is 40%.
Monday
Isolated showers after 2pm. Mostly cloudy, with a high near 75. Northeast wind 8 to 11 mph. Chance of precipitation is 20%.
Monday Night
Showers, mainly after 8pm. Low around 60. East wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm. High near 66. Northeast wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers likely. Cloudy, with a low around 55. Northeast wind around 11 mph. Chance of precipitation is 70%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Thursday
A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 51.
Saturday
A slight chance of showers. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
A slight chance of showers. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Oakton VA
 38.87°N 77.31°W (Elev. 400 ft)
Last Update:
4:53 pm EDT Sep 20, 2026
Forecast Valid:
6pm EDT Sep 20, 2026-6pm EDT Sep 27, 2026
 
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