National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Arctic Air for the Northeast and Mid-Atlantic; Increase Moisture for Pacific Northwest; Active Pattern for Hawaii

An arctic cold front will impact the Great Lakes, Northeast and mid-Atlantic. Snow showers and squalls will accompany this system with increasing winds and falling temperatures. Damaging wind gusts may result in tree damage and power outages. Meanwhile, moisture returns for the Pacific Northwest and Hawaii this weekend with both coverage and intensity of rainfall and higher elevation snows. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

27°F

-3°C

Humidity 100%
Wind Speed SE 13 mph
Barometer 30.11 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 7 Feb 5:15 am CST
Extended Forecast for

Stephan SD

  • Today

    Today: Partly sunny, with a high near 51. Breezy, with a south southeast wind 16 to 21 mph becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 51 °F

    Partly Sunny
    and Breezy
    then Partly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. West northwest wind 7 to 10 mph.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 56. Northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. Southwest wind around 7 mph becoming southeast after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 54. East southeast wind 6 to 13 mph becoming west northwest in the afternoon.

    High: 54 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. North northwest wind around 11 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow before noon. Mostly cloudy, with a high near 43. Northwest wind 8 to 11 mph. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25. North northwest wind 6 to 8 mph becoming southeast after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 44. South southeast wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Partly sunny, with a high near 51. Breezy, with a south southeast wind 16 to 21 mph becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
Mostly cloudy, with a low around 28. West northwest wind 7 to 10 mph.
Sunday
Mostly sunny, with a high near 56. Northwest wind 6 to 10 mph becoming southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 33. Southwest wind around 7 mph becoming southeast after midnight.
Monday
Mostly cloudy, with a high near 54. East southeast wind 6 to 13 mph becoming west northwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 29. North northwest wind around 11 mph.
Tuesday
A slight chance of snow before noon. Mostly cloudy, with a high near 43. Northwest wind 8 to 11 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 25. North northwest wind 6 to 8 mph becoming southeast after midnight.
Wednesday
A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 44. South southeast wind 8 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Thursday
A slight chance of snow. Mostly cloudy, with a high near 43. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.47°W (Elev. 1867 ft)
Last Update:
4:31 am CST Feb 7, 2026
Forecast Valid:
5am CST Feb 7, 2026-6pm CST Feb 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation