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

3 Miles WNW Fort Thompson SD

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 55. Light east northeast wind.

    Low: 55 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers after 5pm. Patchy fog before 10am. Otherwise, cloudy through mid morning, then becoming mostly sunny, with a high near 71. Light northeast wind becoming east 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 10%.

    High: 71 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Low around 59. East wind 11 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. 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. Mostly cloudy, with a high near 73. East wind 11 to 17 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 55. North wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 67. North northeast wind around 9 mph.

    High: 67 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 64. East wind around 10 mph. Chance of precipitation is 70%.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 51. East northeast wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 55. Light east northeast wind.
Thursday
A slight chance of showers after 5pm. Patchy fog before 10am. Otherwise, cloudy through mid morning, then becoming mostly sunny, with a high near 71. Light northeast wind becoming east 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 10%.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Low around 59. East wind 11 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers. Mostly cloudy, with a high near 73. East wind 11 to 17 mph becoming north in the afternoon. Winds could gust as high as 25 mph. 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. Mostly cloudy, with a low around 55. North wind 8 to 11 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 67. North northeast wind around 9 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 64. East wind around 10 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 51. 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 64. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 40%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 73. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Fort Thompson SD
 44.07°N 99.46°W (Elev. 1480 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

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