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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Overcast

26°F

-3°C

Humidity 61%
Wind Speed W 8 mph
Barometer 30.19 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 10 Jan 3:15 am CST
Extended Forecast for

Stephan SD

  • Overnight

    Overnight: A slight chance of snow. Mostly cloudy, with a low around 19. West wind around 8 mph. Chance of precipitation is 20%.

    Low: 19 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of snow before 11am, then a chance of flurries between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 28. Blustery, with a north northwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 30%.

    High: 28 °F

    Chance Snow
    then Chance
    Flurries and
    Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 16. North northwest wind 5 to 10 mph becoming light and variable.

    Low: 16 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 44. South southwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 44 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. West wind 9 to 13 mph.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 49. West southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 49 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. Breezy, with a west northwest wind 14 to 20 mph, with gusts as high as 30 mph.

    Low: 39 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. Breezy, with a west northwest wind 20 to 26 mph, with gusts as high as 37 mph.

    High: 52 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26. North northwest wind 15 to 18 mph, with gusts as high as 29 mph.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of snow. Mostly cloudy, with a low around 19. West wind around 8 mph. Chance of precipitation is 20%.
Saturday
A chance of snow before 11am, then a chance of flurries between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 28. Blustery, with a north northwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 16. North northwest wind 5 to 10 mph becoming light and variable.
Sunday
Mostly sunny, with a high near 44. South southwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 27. West wind 9 to 13 mph.
Monday
Partly sunny, with a high near 49. West southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 39. Breezy, with a west northwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 52. Breezy, with a west northwest wind 20 to 26 mph, with gusts as high as 37 mph.
Tuesday Night
Mostly cloudy, with a low around 26. North northwest wind 15 to 18 mph, with gusts as high as 29 mph.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
Mostly sunny, with a high near 46. Breezy.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 24. Blustery. Chance of precipitation is 20%.
Friday
A chance of snow. Mostly cloudy, with a high near 30. Windy. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.44°W (Elev. 1811 ft)
Last Update:
3:16 am CST Jan 10, 2026
Forecast Valid:
3am CST Jan 10, 2026-6pm CST Jan 16, 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