National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

61°F

16°C

Humidity 40%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 18 Oct 12:15 pm CDT
Extended Forecast for

3 Miles ESE Reliance SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. North northeast wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 42. North northeast wind around 11 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 62. Northeast wind around 11 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 43. Southeast wind 8 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. South southeast wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. South wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. Southwest wind 5 to 8 mph becoming north northeast in the afternoon.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. East northeast wind 5 to 7 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72. Southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 69. North northeast wind 7 to 15 mph, with gusts as high as 23 mph.
Tonight
Increasing clouds, with a low around 42. North northeast wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 62. Northeast wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 43. Southeast wind 8 to 10 mph.
Tuesday
Sunny, with a high near 69. South southeast wind 9 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 48. South wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 69. Southwest wind 5 to 8 mph becoming north northeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 47. East northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 72. Southeast wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
Partly cloudy, with a low around 57. Breezy.
Friday
A slight chance of showers. Partly sunny, with a high near 76. Breezy. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Breezy. Chance of precipitation is 50%.
Saturday
A chance of showers. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Reliance SD
 43.86°N 99.54°W (Elev. 1762 ft)
Last Update:
12:16 pm CDT Oct 18, 2026
Forecast Valid:
12pm CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
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