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

72°F

22°C

Humidity 32%
Wind Speed N 10 mph
Barometer 30.04 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 19 Jun 8:35 pm CDT
Extended Forecast for

Stephan SD

  • Tonight

    Tonight: Partly cloudy, with a low around 50. North northwest wind 6 to 14 mph becoming east northeast after midnight.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after 3pm. Increasing clouds, with a high near 78. East northeast wind 7 to 16 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 54. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Chance
    Showers then
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 64. Breezy, with an east wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 64 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Cloudy, with a low around 49. East northeast wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: Mostly cloudy, with a high near 72. Northeast wind 6 to 8 mph becoming south southeast in the afternoon.

    High: 72 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 52. Southeast wind 6 to 8 mph becoming north northwest after midnight. Chance of precipitation is 70%.

    Low: 52 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 73. Breezy, with a west northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 49. Northwest wind 7 to 17 mph.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. North northwest wind 6 to 14 mph becoming east northeast after midnight.
Saturday
A slight chance of showers after 3pm. Increasing clouds, with a high near 78. East northeast wind 7 to 16 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Saturday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 54. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm. High near 64. Breezy, with an east wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Sunday Night
Showers likely, mainly before 1am. Cloudy, with a low around 49. East northeast wind 7 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Mostly cloudy, with a high near 72. Northeast wind 6 to 8 mph becoming south southeast in the afternoon.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 52. Southeast wind 6 to 8 mph becoming north northwest after midnight. Chance of precipitation is 70%.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 73. Breezy, with a west northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 49. Northwest wind 7 to 17 mph.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50. Chance of precipitation is 20%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.44°W (Elev. 1811 ft)
Last Update:
8:36 pm CDT Jun 19, 2026
Forecast Valid:
8pm CDT Jun 19, 2026-6pm CDT Jun 26, 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