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

Heavy to Excessive Rainfall in the Central Appalachians; Severe Weather in the Mid-South; Hot Weather in Southern California

Heavy to excessive rainfall may lead to flooding today over southwest Pennsylvania into northern West Virginia, and western Maryland. Severe thunderstorms are possible this afternoon and evening in the Mid-South and across Eastern North Carolina. An extended period of hot weather is forecast for parts of coastal southern California including Los Angeles from today through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

57°F

14°C

Humidity 90%
Wind Speed SE 9 mph
Barometer 29.84 in (1010.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 May 1:52 pm EDT
Extended Forecast for

Oakton VA

  • This Afternoon

    This Afternoon: Patchy drizzle before 5pm, then patchy drizzle with isolated showers after 5pm. Cloudy, with a high near 59. East wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 59 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then scattered showers between 11pm and 4am. Patchy fog. Low around 55. East wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers and
    Patchy Fog
    then
    Scattered
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 68. West wind 7 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 8pm. Mostly cloudy, with a low around 52. West wind 7 to 10 mph. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. West wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Patchy drizzle before 5pm, then patchy drizzle with isolated showers after 5pm. Cloudy, with a high near 59. East wind 8 to 10 mph, with gusts as high as 20 mph.
Tonight
Showers and possibly a thunderstorm before 11pm, then scattered showers between 11pm and 4am. Patchy fog. Low around 55. East wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 68. West wind 7 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 8pm. Mostly cloudy, with a low around 52. West wind 7 to 10 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 66. West wind 10 to 14 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
Monday Night
Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Tuesday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oakton VA
 38.87°N 77.31°W (Elev. 400 ft)
Last Update:
2:34 pm EDT May 21, 2025
Forecast Valid:
2pm EDT May 21, 2025-6pm EDT May 27, 2025
 
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