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

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Light Rain

52°F

11°C

Humidity 80%
Wind Speed NW 18 G 33 mph
Barometer 29.74 in (1006.8 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 12 Mar 6:52 am EDT
Extended Forecast for

Great Falls VA

  • Today

    Today: Rain before 11am, then rain and snow. Temperature falling to around 35 by 2pm. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 45 °F⇓

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light west after midnight.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 52. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 39 mph.

    High: 52 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 56. West wind around 9 mph.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.

    Low: 53 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers. High near 69. Chance of precipitation is 90%.

    High: 69 °F

    Showers

Detailed Forecast

Today
Rain before 11am, then rain and snow. Temperature falling to around 35 by 2pm. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light west after midnight.
Friday
Partly sunny, with a high near 52. Breezy, with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 39 mph.
Friday Night
Mostly clear, with a low around 41. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.
Saturday
Mostly sunny, with a high near 56. West wind around 9 mph.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 60.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Monday
Showers. High near 69. Chance of precipitation is 90%.
Monday Night
A chance of showers before 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls VA
 39.01°N 77.29°W (Elev. 348 ft)
Last Update:
4:53 am EDT Mar 12, 2026
Forecast Valid:
7am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation