Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

A storm system will shift from eastern Texas into the lower Mississippi Valley Monday with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. A Flood Watch remains in effect. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest Monday into Wednesday. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

46°F

8°C

Humidity 54%
Wind Speed W 7 mph
Barometer 30.12 in (1020.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 24 Nov 12:52 am EST
Extended Forecast for

3 Miles SSW Herndon VA

  • Overnight

    Overnight: Clear, with a low around 36. Northwest wind around 6 mph.

    Low: 36 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 56. West wind around 6 mph becoming calm  in the afternoon.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. South wind 3 to 6 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 1pm.  High near 56. South wind 7 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am.  Mostly cloudy, with a low around 50. South wind around 7 mph.  Chance of precipitation is 70%.

    Low: 50 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain.  Partly sunny, with a high near 68. Chance of precipitation is 30%.

    High: 68 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 36. Northwest wind around 6 mph.
Monday
Sunny, with a high near 56. West wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 39. South wind 3 to 6 mph.
Tuesday
Rain, mainly after 1pm. High near 56. South wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 50. South wind around 7 mph. Chance of precipitation is 70%.
Wednesday
A chance of rain. Partly sunny, with a high near 68. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 36.
Thanksgiving Day
Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 29.
Friday
Sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Herndon VA
 38.93°N 77.42°W (Elev. 308 ft)
12:53 am EST Nov 24, 2025
1am EST Nov 24, 2025-6pm EST Nov 30, 2025
 
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