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

67°F

19°C

Humidity 96%
Wind Speed W 8 mph
Barometer 30.09 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 25 Aug 8:55 am CDT
Extended Forecast for

Reliance SD

  • Today

    Today: Mostly sunny, with a high near 84. Northwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northwest wind 7 to 11 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. North northwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. North wind 5 to 8 mph becoming light and variable after midnight.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Light east southeast wind becoming southeast 5 to 9 mph in the morning.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. East southeast wind 11 to 14 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Breezy, with a south southeast wind 15 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms and
    Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 89. South southeast wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 84. Northwest wind 6 to 15 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 59. Northwest wind 7 to 11 mph.
Wednesday
Sunny, with a high near 80. North northwest wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 57. North wind 5 to 8 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 83. Light east southeast wind becoming southeast 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 62. East southeast wind 11 to 14 mph.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87. Breezy, with a south southeast wind 15 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 89. South southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 86.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Reliance SD
 43.88°N 99.6°W (Elev. 1781 ft)
Last Update:
8:06 am CDT Aug 25, 2026
Forecast Valid:
9am CDT Aug 25, 2026-6pm CDT Aug 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation