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.

Fog/Mist

54°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 54°F (12°C)
Visibility 2.00 mi
Last update 17 Sep 1:35 am CDT
Extended Forecast for

Stephan SD

  • Overnight

    Overnight: Mostly cloudy, with a low around 54. Light northeast wind.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 71. East wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 71 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Patchy fog after 1am. Low around 58. Breezy, with an east wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 58 °F

    Heavy Rain
    and Patchy
    Fog

  • Friday

    Friday: Showers, mainly before 9am. High near 72. Breezy, with an east wind 13 to 20 mph becoming north in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers and
    Breezy then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Cloudy, with a low around 54. North wind 10 to 13 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. North northeast wind around 10 mph.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Northeast wind 8 to 10 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 63. East northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 50. East northeast wind around 10 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 54. Light northeast wind.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 71. East wind 6 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Patchy fog after 1am. Low around 58. Breezy, with an east wind 11 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers, mainly before 9am. High near 72. Breezy, with an east wind 13 to 20 mph becoming north in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of showers before 1am. Cloudy, with a low around 54. North wind 10 to 13 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 66. North northeast wind around 10 mph.
Saturday Night
Mostly cloudy, with a low around 52. Northeast wind 8 to 10 mph.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 63. East northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 50. East northeast wind around 10 mph. Chance of precipitation is 60%.
Monday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
Mostly cloudy, with a high near 68.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 51. Chance of precipitation is 40%.
Wednesday
A slight chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.47°W (Elev. 1867 ft)
Last Update:
1:31 am CDT Sep 17, 2026
Forecast Valid:
1am CDT Sep 17, 2026-6pm CDT Sep 23, 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