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

Rain Providing Some Relief to Drought-Stricken Southern U.S.

A storm tracking across the southern U.S. will continue to bring areas of heavy thunderstorms with risks for severe weather and excessive rainfall from Texas to Florida through this weekend. While much of this rainfall will be beneficial to the drought, excessive rainfall may bring areas of flash and urban flooding. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

68°F

20°C

Humidity 30%
Wind Speed S 9 G 24 mph
Barometer 29.83 in (1009.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 1 May 4:52 pm EDT
Extended Forecast for

Great Falls VA

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Mostly cloudy, with a low around 46. South wind 5 to 10 mph becoming northwest in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

    Low: 46 °F

    Scattered
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 59. North wind around 9 mph.

    High: 59 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Northwest wind 6 to 8 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63. Northwest wind around 10 mph, with gusts as high as 21 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Mostly cloudy, with a low around 46. South wind 5 to 10 mph becoming northwest in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 59. North wind around 9 mph.
Saturday Night
Partly cloudy, with a low around 41. Northwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 63. Northwest wind around 10 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 45. Light and variable wind.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Sunny, with a high near 82.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 46. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
Last Update:
4:53 pm EDT May 1, 2026
Forecast Valid:
5pm EDT May 1, 2026-6pm EDT May 8, 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