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

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

74°F

23°C

Humidity 91%
Wind Speed SW 10 mph
Barometer 29.88 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 8 Sep 6:15 am CDT
Extended Forecast for

Stephan SD

  • Today

    Today: Mostly sunny, with a high near 83. Breezy, with a west wind 11 to 20 mph becoming north northwest in the morning. Winds could gust as high as 37 mph.

    High: 83 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. West northwest wind 5 to 9 mph.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. West northwest wind 9 to 17 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West northwest wind 5 to 9 mph becoming light and variable.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. South wind 13 to 17 mph, with gusts as high as 26 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. Breezy, with a south wind 13 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 86 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. North northwest wind 13 to 17 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72. North northwest wind 9 to 11 mph.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 83. Breezy, with a west wind 11 to 20 mph becoming north northwest in the morning. Winds could gust as high as 37 mph.
Tonight
Mostly clear, with a low around 58. West northwest wind 5 to 9 mph.
Wednesday
Sunny, with a high near 77. West northwest wind 9 to 17 mph.
Wednesday Night
Mostly clear, with a low around 54. West northwest wind 5 to 9 mph becoming light and variable.
Thursday
Sunny, with a high near 87. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Thursday Night
Mostly clear, with a low around 63. South wind 13 to 17 mph, with gusts as high as 26 mph.
Friday
Sunny, with a high near 86. Breezy, with a south wind 13 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Mostly clear, with a low around 54. North northwest wind 13 to 17 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 72. North northwest wind 9 to 11 mph.
Saturday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Monday
A chance of showers. Partly sunny, with a high near 67. 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 99.47°W (Elev. 1867 ft)
Last Update:
5:21 am CDT Sep 8, 2026
Forecast Valid:
6am CDT Sep 8, 2026-6pm CDT Sep 14, 2026
 
Forecast Discussion
 
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Additional Resources

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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