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

Hazardous Weather Conditions

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

85°F

29°C

Humidity 69%
Wind Speed SE 12 mph
Barometer 29.85 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 24 Jul 7:35 pm CDT
Extended Forecast for

Oacoma SD

Heat Advisory July 25, 01:00pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 71. South southeast wind 7 to 9 mph.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 103. Heat index values as high as 108. Light southwest wind becoming south southeast 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 103 °F

    Hot

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 76. South wind 9 to 13 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny and hot, with a high near 103. Heat index values as high as 110. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 103 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. North northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 101. Light north wind becoming east northeast 5 to 10 mph in the morning.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. East wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Partly sunny and hot, with a high near 98. Southeast wind 5 to 10 mph.

    High: 98 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Southeast wind 6 to 10 mph.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 71. South southeast wind 7 to 9 mph.
Saturday
Sunny and hot, with a high near 103. Heat index values as high as 108. Light southwest wind becoming south southeast 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A slight chance of showers and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 76. South wind 9 to 13 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, then gradually becoming sunny and hot, with a high near 103. Heat index values as high as 110. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 73. North northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny and hot, with a high near 101. Light north wind becoming east northeast 5 to 10 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. East wind 5 to 9 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny and hot, with a high near 98. Southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 71. Southeast wind 6 to 10 mph.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
Mostly sunny and hot, with a high near 95.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 20%.
Friday
Sunny and hot, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oacoma SD
 43.8°N 99.39°W (Elev. 1355 ft)
Last Update:
7:36 pm CDT Jul 24, 2026
Forecast Valid:
7pm CDT Jul 24, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation