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.

Fog

51°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 51°F (11°C)
Visibility 0.25 mi
Last update 17 Sep 3:15 am CDT
Extended Forecast for

Gann Valley SD

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 71. Northeast wind 5 to 11 mph.

    High: 71 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog after 1am. Low around 59. Breezy, with an east wind 10 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 59 °F

    Heavy Rain
    and Patchy
    Fog

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 73. Breezy, with an east wind 13 to 20 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 73 °F

    Heavy Rain
    and Breezy
    then Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Cloudy, with a low around 54. North wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. North northeast wind around 10 mph.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Northeast wind 6 to 10 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 63. East northeast wind 9 to 11 mph. Chance of precipitation is 70%.

    High: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 50. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 71. Northeast wind 5 to 11 mph.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Patchy fog after 1am. Low around 59. Breezy, with an east wind 10 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 73. Breezy, with an east wind 13 to 20 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A slight chance of showers before 1am. Cloudy, with a low around 54. North wind 8 to 11 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 66. North northeast wind around 10 mph.
Saturday Night
Mostly cloudy, with a low around 52. Northeast wind 6 to 10 mph.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 63. East northeast wind 9 to 11 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 50. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.
Monday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 67.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 72. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Gann Valley SD
 44.04°N 98.98°W (Elev. 1709 ft)
Last Update:
3:21 am CDT Sep 17, 2026
Forecast Valid:
3am CDT Sep 17, 2026-6pm CDT Sep 23, 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