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

65°F

18°C

Humidity 37%
Wind Speed NE 7 mph
Barometer 30.05 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 18 Oct 12:55 pm CDT
Extended Forecast for

Stephan SD

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. Northeast wind 13 to 17 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62. Northeast wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 43. Southeast wind around 9 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. South southeast wind 9 to 17 mph, with gusts as high as 25 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. Light east northeast wind becoming north northeast 5 to 9 mph in the morning.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Northeast wind around 7 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 72. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 67. Northeast wind 13 to 17 mph.
Tonight
Mostly clear, with a low around 42. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 62. Northeast wind 11 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 43. Southeast wind around 9 mph.
Tuesday
Sunny, with a high near 68. South southeast wind 9 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 48. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 69. Light east northeast wind becoming north northeast 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 48. Northeast wind around 7 mph.
Thursday
Sunny, with a high near 72. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 57. Chance of precipitation is 20%.
Friday
A chance of showers. Partly sunny, with a high near 75. Breezy. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Breezy. Chance of precipitation is 50%.
Saturday
A chance of showers. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Stephan SD
 44.25°N 99.44°W (Elev. 1811 ft)
12:16 pm CDT Oct 18, 2026
1pm CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
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