Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

54°F

12°C

Humidity 84%
Wind Speed W 6 mph
Barometer 29.70 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 11 Oct 6:55 am CDT
Extended Forecast for

Gann Valley SD

  • Today

    Today: Partly sunny, with a high near 74. East northeast wind 6 to 10 mph becoming north in the morning.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Mostly Cloudy

  • Columbus Day

    Columbus Day: A chance of sprinkles with a slight chance of showers before 11am, then a chance of sprinkles between 11am and 3pm.  Partly sunny, with a high near 67. North northeast wind 11 to 14 mph.  Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North northwest wind 9 to 13 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. North wind around 9 mph.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. North northeast wind 5 to 7 mph.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 1pm.  Mostly sunny, with a high near 62. North northeast wind 6 to 10 mph.  Chance of precipitation is 20%.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers.  Mostly cloudy, with a low around 44. East northeast wind 6 to 8 mph.  Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers.  Mostly cloudy, with a high near 59. North northwest wind 8 to 16 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    High: 59 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 74. East northeast wind 6 to 10 mph becoming north in the morning.
Tonight
Mostly cloudy, with a low around 48. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.
Columbus Day
A chance of sprinkles with a slight chance of showers before 11am, then a chance of sprinkles between 11am and 3pm. Partly sunny, with a high near 67. North northeast wind 11 to 14 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 44. North northwest wind 9 to 13 mph.
Tuesday
Mostly sunny, with a high near 61. North wind around 9 mph.
Tuesday Night
Partly cloudy, with a low around 43. North northeast wind 5 to 7 mph.
Wednesday
A slight chance of showers after 1pm. Mostly sunny, with a high near 62. North northeast wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 44. East northeast wind 6 to 8 mph. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 59. North northwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Thursday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 54. Breezy.
Friday Night
Areas of frost. Otherwise, mostly clear, with a low around 34.
Saturday
Areas of frost. Otherwise, sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Gann Valley SD
 44.04°N 98.98°W (Elev. 1709 ft)
6:21 am CDT Oct 11, 2026
7am CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
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Additional Resources

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