Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

62°F

17°C

Humidity 56%
Wind Speed N 8 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 May 11:52 pm EDT
Extended Forecast for

Great Falls VA

  • Overnight

    Overnight: Mostly clear, with a low around 49. North wind around 6 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 70. North wind around 6 mph.

    High: 70 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Showers, mainly after 2am.  Low around 55. Calm wind becoming southeast around 6 mph after midnight.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers.  High near 60. Southeast wind around 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm.  Low around 53. East wind 5 to 9 mph.  Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Thursday

    Thursday: Showers, mainly after 2pm.  High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 8pm.  Low around 52. Chance of precipitation is 80%.

    Low: 52 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A chance of showers.  Mostly sunny, with a high near 64. Chance of precipitation is 40%.

    High: 64 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 49. North wind around 6 mph.
Tuesday
Increasing clouds, with a high near 70. North wind around 6 mph.
Tuesday Night
Showers, mainly after 2am. Low around 55. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers. High near 60. Southeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm. Low around 53. East wind 5 to 9 mph. Chance of precipitation is 80%.
Thursday
Showers, mainly after 2pm. High near 66. Chance of precipitation is 80%.
Thursday Night
Showers, mainly before 8pm. Low around 52. Chance of precipitation is 80%.
Friday
A chance of showers. Mostly sunny, with a high near 64. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 53.
Memorial Day
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
10:30 pm EDT May 19, 2025
12am EDT May 20, 2025-6pm EDT May 26, 2025
 
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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