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.

Overcast

34°F

1°C

Humidity 61%
Wind Speed SW 5 mph
Barometer 29.69 in (1005.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 31 Dec 11:52 pm EST
Extended Forecast for

Great Falls VA

  • Overnight

    Overnight: A chance of snow showers, mainly after 5am. Mostly cloudy, with a low around 26. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 36 mph.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm in the evening.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 40. Calm wind becoming west around 6 mph in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.

    High: 37 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of snow showers, mainly after 5am. Mostly cloudy, with a low around 26. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.
New Year's Day
Mostly sunny, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 36 mph.
Thursday Night
Mostly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 40. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 26. Calm wind.
Saturday
A slight chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Mostly cloudy, with a high near 37.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 52.
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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:
10:57 pm EST Dec 31, 2025
Forecast Valid:
12am EST Jan 1, 2026-6pm EST Jan 7, 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