Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Heavy Snow & Ice Across Portions of the Plains and Midwest; Unsettled in the Pacific Northwest

Heavy snow and freezing rain will impact portions of the Plains, upper Midwest, and Great Lakes into Monday. Significant snow accumulations and gusty winds are likely in some areas. Farther to the south, rain and a few thunderstorms are expected over the Mississippi, Tennessee, and Ohio Valleys. Heavy rain & mountain snowfall will also continue from northern California into the Pacific Northwest. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

39°F

4°C

Humidity 70%
Wind Speed N 5 mph
Barometer 30.08 in (1018.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 20 Jan 9:52 pm EST
Extended Forecast for

Herndon VA

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Light west wind.

    Partly Cloudy

    Low: 35 °F

  • Sunday

    Sunday: Cloudy, with a high near 53. South wind 3 to 6 mph.

    Cloudy

    High: 53 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 42. South wind 3 to 6 mph.

    Mostly Cloudy

    Low: 42 °F

  • Monday

    Monday: Mostly cloudy, with a high near 59. Light south wind increasing to 5 to 10 mph in the morning.

    Mostly Cloudy

    High: 59 °F

  • Monday
    Night

    Monday Night: Rain.  Low around 47. South wind 8 to 11 mph.  Chance of precipitation is 90%.

    Rain Likely
    then Rain

    Low: 47 °F

  • Tuesday

    Tuesday: Showers likely.  Partly sunny, with a high near 57. Chance of precipitation is 70%.

    Showers
    Likely

    High: 57 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 34.

    Partly Cloudy

    Low: 34 °F

  • Wednesday

    Wednesday: Sunny, with a high near 45.

    Sunny

    High: 45 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Partly Cloudy

    Low: 27 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Light west wind.
Sunday
Cloudy, with a high near 53. South wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 42. South wind 3 to 6 mph.
Monday
Mostly cloudy, with a high near 59. Light south wind increasing to 5 to 10 mph in the morning.
Monday Night
Rain. Low around 47. South wind 8 to 11 mph. Chance of precipitation is 90%.
Tuesday
Showers likely. Partly sunny, with a high near 57. Chance of precipitation is 70%.
Tuesday Night
Partly cloudy, with a low around 34.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Mostly sunny, with a high near 50.
Click Map For Forecast
Point Forecast:
Herndon VA
 38.97°N 77.38°W (Elev. 354 ft)
9:27 pm EST Jan 20, 2018
10pm EST Jan 20, 2018-6pm EST Jan 27, 2018
 
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