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.

Light Rain

82°F

28°C

Humidity 62%
Wind Speed NE 8 mph
Barometer 30.00 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 4 Jul 6:15 pm CDT
Extended Forecast for

Stephan SD

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 8pm and 10pm. Mostly clear, with a low around 62. Calm wind becoming east southeast around 6 mph in the evening. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 90. East southeast wind 5 to 13 mph becoming south in the morning.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. East southeast wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 93. Breezy, with a south wind 14 to 20 mph.

    High: 93 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 67. Southeast wind 10 to 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 92 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind 13 to 18 mph. Chance of precipitation is 70%.

    Low: 66 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84. West southwest wind 11 to 14 mph becoming north in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. Northeast wind 8 to 13 mph.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 8pm and 10pm. Mostly clear, with a low around 62. Calm wind becoming east southeast around 6 mph in the evening. Chance of precipitation is 20%.
Sunday
Sunny and hot, with a high near 90. East southeast wind 5 to 13 mph becoming south in the morning.
Sunday Night
Mostly clear, with a low around 67. East southeast wind 11 to 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny and hot, with a high near 93. Breezy, with a south wind 14 to 20 mph.
Monday Night
Showers likely and possibly a thunderstorm before 1am. Mostly cloudy, with a low around 67. Southeast wind 10 to 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 92. Breezy, with a south southeast wind 11 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tuesday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southeast wind 13 to 18 mph. Chance of precipitation is 70%.
Wednesday
A slight chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 84. West southwest wind 11 to 14 mph becoming north in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 61. Northeast wind 8 to 13 mph.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 20%.
Saturday
Sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.47°W (Elev. 1867 ft)
Last Update:
6:31 pm CDT Jul 4, 2026
Forecast Valid:
6pm CDT Jul 4, 2026-6pm CDT Jul 11, 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