Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

40°F

4°C

Humidity 47%
Wind Speed E 3 mph
Barometer 30.30 in (1026.2 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 15 Mar 1:52 am EDT
Extended Forecast for

Vienna VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. East wind around 7 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 59. Southeast wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 59 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers, mainly before 3am.  Low around 53. Southeast wind around 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 11am. Some of the storms could be severe and produce heavy rainfall.  High near 72. Breezy, with a south wind 14 to 20 mph, with gusts as high as 36 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 72 °F

    Severe
    Thunderstorms
    and Breezy

  • Monday Night

    Monday Night: Rain showers before 11pm, then rain and snow showers. The rain could be heavy at times.  Low around 29. West wind 14 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Rain/Snow

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. East wind around 7 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 59. Southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Showers, mainly before 3am. Low around 53. Southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, with thunderstorms also possible after 11am. Some of the storms could be severe and produce heavy rainfall. High near 72. Breezy, with a south wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 11pm, then rain and snow showers. The rain could be heavy at times. Low around 29. West wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 58.
Friday Night
A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 30%.
Saturday
A chance of rain. Partly sunny, with a high near 58. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vienna VA
 38.89°N 77.25°W (Elev. 348 ft)
1:53 am EDT Mar 15, 2026
2am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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