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

57°F

14°C

Humidity 64%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 20 Jun 12:15 am CDT
Extended Forecast for

Oacoma SD

  • Overnight

    Overnight: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 3pm. Increasing clouds, with a high near 81. Light and variable wind becoming southeast 11 to 16 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 50%.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Low around 54. East southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Showers
    Likely then
    Showers

  • Sunday

    Sunday: Showers and thunderstorms before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 67. East northeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 50. East northeast wind 8 to 13 mph becoming light northeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers after 1pm. Partly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 53. Southeast wind 5 to 8 mph becoming west southwest after midnight. Chance of precipitation is 50%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. West northwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 50. Calm wind.
Saturday
A chance of showers, mainly after 3pm. Increasing clouds, with a high near 81. Light and variable wind becoming southeast 11 to 16 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Low around 54. East southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 67. East northeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Showers likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 50. East northeast wind 8 to 13 mph becoming light northeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A slight chance of showers after 1pm. Partly sunny, with a high near 75. Light and variable wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 53. Southeast wind 5 to 8 mph becoming west southwest after midnight. Chance of precipitation is 50%.
Tuesday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. West northwest wind 7 to 12 mph increasing to 13 to 18 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 50. Northwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 24 mph.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Oacoma SD
 43.8°N 99.39°W (Elev. 1355 ft)
Last Update:
12:01 am CDT Jun 20, 2026
Forecast Valid:
12am CDT Jun 20, 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