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

Arctic Air Plunges into the Great Lakes, Northeast and Mid-Atlantic

Arctic air dropping through the northern and eastern U.S. and a storm off the east coast will bring periods of snow, very cold wind chills and hazardous traveling conditions from the Upper Great Lakes to the Northeast. Meanwhile in southern California, Santa Ana winds will decrease but hot, dry air will remain over the area with elevated fire weather conditions. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

33°F

1°C

Humidity 33%
Wind Speed SW 8 mph
Barometer 29.75 in (1007.8 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 13 Dec 3:52 pm EST
Extended Forecast for

Potomac MD

  • This
    Afternoon

    This Afternoon: A slight chance of light snow.  Mostly cloudy, with a high near 32. West wind around 7 mph.  Chance of precipitation is 20%.

    Slight Chance
    Light Snow

    High: 32 °F

  • Tonight

    Tonight: A chance of light snow, mainly between 7pm and 4am.  Cloudy, with a low around 26. South wind 7 to 10 mph.  Chance of precipitation is 40%.

    Chance Light
    Snow

    Low: 26 °F

  • Thursday

    Thursday: A slight chance of snow showers before 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 39. Northwest wind 10 to 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers

    High: 39 °F

  • Thursday
    Night

    Thursday Night: Increasing clouds, with a low around 23. Northwest wind 5 to 8 mph becoming calm  in the evening.

    Increasing
    Clouds

    Low: 23 °F

  • Friday

    Friday: A slight chance of snow showers.  Mostly cloudy, with a high near 35. Calm wind becoming southeast around 5 mph in the morning.  Chance of precipitation is 20%.

    Slight Chance
    Snow Showers

    High: 35 °F

  • Friday
    Night

    Friday Night: A slight chance of snow showers.  Partly cloudy, with a low around 27. Chance of precipitation is 20%.

    Slight Chance
    Snow Showers

    Low: 27 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 41.

    Mostly Sunny

    High: 41 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 28.

    Mostly Clear

    Low: 28 °F

  • Sunday

    Sunday: Partly sunny, with a high near 46.

    Partly Sunny

    High: 46 °F

Detailed Forecast

This Afternoon
A slight chance of light snow. Mostly cloudy, with a high near 32. West wind around 7 mph. Chance of precipitation is 20%.
Tonight
A chance of light snow, mainly between 7pm and 4am. Cloudy, with a low around 26. South wind 7 to 10 mph. Chance of precipitation is 40%.
Thursday
A slight chance of snow showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 39. Northwest wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday Night
Increasing clouds, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening.
Friday
A slight chance of snow showers. Mostly cloudy, with a high near 35. Calm wind becoming southeast around 5 mph in the morning. Chance of precipitation is 20%.
Friday Night
A slight chance of snow showers. Partly cloudy, with a low around 27. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Partly sunny, with a high near 46.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 44.
Click Map For Forecast
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 ft)
4:32 pm EST Dec 13, 2017
4pm EST Dec 13, 2017-6pm EST Dec 20, 2017
 
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