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/Mist

52°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 30.30 in
Dewpoint 52°F (11°C)
Visibility 5.00 mi
Last update 17 Sep 7:55 am CDT
Extended Forecast for

Reliance SD

Dense Fog Advisory September 17, 08:17am until September 17, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory September 17, 08:17am until September 17, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Today

    High: 71 °F

    Areas Dense
    Fog then
    Slight Chance
    Showers

  • Tonight

    Tonight: 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. Breezy, with an east wind 15 to 22 mph, with gusts as high as 31 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 3pm, then a chance of showers. Mostly cloudy, with a high near 73. Breezy, with an east wind 14 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Cloudy, with a low around 55. North wind 10 to 14 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. North wind around 11 mph.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Northeast wind 8 to 11 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 63. East wind around 11 mph, with gusts as high as 20 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 51. East northeast wind around 10 mph. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers after 5pm. Areas of dense fog before 11am. Otherwise, mostly cloudy, with a high near 71. East wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 10%.
Tonight
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. Breezy, with an east wind 15 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers likely and possibly a thunderstorm before 3pm, then a chance of showers. Mostly cloudy, with a high near 73. Breezy, with an east wind 14 to 20 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers before 1am. Cloudy, with a low around 55. North wind 10 to 14 mph. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 66. North wind around 11 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Northeast wind 8 to 11 mph. Chance of precipitation is 20%.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 63. East wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 51. East northeast wind around 10 mph. Chance of precipitation is 60%.
Monday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 64. East wind around 11 mph, with gusts as high as 20 mph. 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 chance of showers. Mostly sunny, with a high near 73. Breezy. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Reliance SD
 43.9°N 99.6°W (Elev. 1798 ft)
Last Update:
7:21 am CDT Sep 17, 2026
Forecast Valid:
8am 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