Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along coastal areas from the DelMarVa Peninsula through southeastern New England. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

6°F

-14°C

Humidity 72%
Wind Speed Calm
Barometer 30.71 in
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Last update 22 Feb 10:15 pm CST
Extended Forecast for

Stephan SD

  • Tonight

    Tonight: Mostly clear, with a low around 1. East southeast wind 6 to 9 mph.

    Low: 1 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 41. Southeast wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 41 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. South southeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 48. Breezy, with a west northwest wind 16 to 24 mph.

    High: 48 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 17. North northwest wind 6 to 11 mph becoming east after midnight.

    Low: 17 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow.  Mostly cloudy, with a high near 38. Southeast wind 7 to 14 mph.  Chance of precipitation is 50%.

    High: 38 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20. East northeast wind 10 to 16 mph becoming west southwest in the evening.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 52. Breezy, with a west northwest wind 15 to 23 mph, with gusts as high as 31 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. West southwest wind 11 to 14 mph.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 1. East southeast wind 6 to 9 mph.
Monday
Increasing clouds, with a high near 41. Southeast wind 10 to 17 mph, with gusts as high as 29 mph.
Monday Night
Mostly cloudy, with a low around 27. South southeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 48. Breezy, with a west northwest wind 16 to 24 mph.
Tuesday Night
Partly cloudy, with a low around 17. North northwest wind 6 to 11 mph becoming east after midnight.
Wednesday
A chance of snow. Mostly cloudy, with a high near 38. Southeast wind 7 to 14 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 20. East northeast wind 10 to 16 mph becoming west southwest in the evening.
Thursday
Sunny, with a high near 52. Breezy, with a west northwest wind 15 to 23 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 28. West southwest wind 11 to 14 mph.
Friday
Mostly sunny, with a high near 56. Breezy.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 31.
Saturday Night
Mostly cloudy, with a low around 9.
Sunday
Partly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.44°W (Elev. 1811 ft)
10:16 pm CST Feb 22, 2026
10pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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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