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

Hurricane Helene Expected to Rapidly Strengthen Over the Gulf of Mexico

Helene has intensified to hurricane-strength, and is expected to bring life-threatening storm surge, surf and rip current conditions, and damaging hurricane-force winds to Florida and the Southeast. Considerable flash and urban flooding is expected across portions of Florida, the Southeast, and the southern Appalachians. Monitor the National Hurricane Center for the latest updates. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fog/Mist

68°F

20°C

Humidity 93%
Wind Speed E 6 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 66°F (19°C)
Visibility 4.00 mi
Last update 25 Sep 10:52 am EDT
Extended Forecast for

Great Falls VA

  • Today

    Today: Showers likely and possibly a thunderstorm before 2pm, then scattered showers and thunderstorms after 2pm. Patchy fog. Otherwise, cloudy, with a high near 72. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely and
    Patchy Fog

  • Tonight

    Tonight: Scattered showers and thunderstorms. Patchy fog before 9pm, then patchy fog after 10pm. Otherwise, cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Scattered
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am. Cloudy, with a high near 78. South wind around 6 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers. Cloudy, with a low around 68. Light southeast wind. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. East wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

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

    Low: 64 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 2pm, then scattered showers and thunderstorms after 2pm. Patchy fog. Otherwise, cloudy, with a high near 72. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Scattered showers and thunderstorms. Patchy fog before 9pm, then patchy fog after 10pm. Otherwise, cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Cloudy, with a high near 78. South wind around 6 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers. Cloudy, with a low around 68. Light southeast wind. Chance of precipitation is 20%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Cloudy, with a high near 75. East wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Friday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Sunday
A chance of showers after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
Last Update:
10:30 am EDT Sep 25, 2024
Forecast Valid:
11am EDT Sep 25, 2024-6pm EDT Oct 1, 2024
 
Forecast Discussion
 
Get as KML Get as XML

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