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.

Overcast

N/A

Humidity NA
Wind Speed E 9 G 20 mph
Barometer 29.92 in
Dewpoint N/A
Visibility 10.00 mi
Last update 21 Jun 3:55 pm CDT
Extended Forecast for

Reliance SD

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Patchy fog. Steady temperature around 57. East wind around 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then a chance of showers. Patchy fog before 10pm. Low around 50. East northeast wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 72. East northeast wind 6 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 21 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 54. South southeast wind 10 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Partly Cloudy
    then Showers

  • Tuesday

    Tuesday: Showers likely, mainly before 7am. Partly sunny, with a high near 75. South wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. West northwest wind 8 to 13 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. North northwest wind 5 to 11 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. East northeast wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Patchy fog. Steady temperature around 57. East wind around 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 10pm, then a chance of showers. Patchy fog before 10pm. Low around 50. East northeast wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 72. East northeast wind 6 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 21 mph.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 54. South southeast wind 10 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely, mainly before 7am. Partly sunny, with a high near 75. South wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Mostly clear, with a low around 51. West northwest wind 8 to 13 mph.
Wednesday
Mostly sunny, with a high near 73. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 50. North northwest wind 5 to 11 mph.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. East northeast wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 76. Breezy. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Breezy. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Breezy. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Reliance SD
 43.9°N 99.6°W (Elev. 1798 ft)
Last Update:
3:36 pm CDT Jun 21, 2026
Forecast Valid:
4pm CDT Jun 21, 2026-6pm CDT Jun 27, 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