Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77°NLon: 99.32°WElev: 1693ft.

Fair

73°F

23°C

Humidity 57%
Wind Speed E 5 mph
Barometer 30.03 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Aug 8:55 pm CDT
Extended Forecast for

11 Miles NNE Chamberlain SD

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southeast wind 6 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers between 9am and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 91. Breezy, with a south southeast wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.  Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 1am.  Low around 66. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    T-storms and
    Breezy

  • Thursday

    Thursday: Sunny and hot, with a high near 93. Heat index values as high as 98. South wind 13 to 15 mph.

    High: 93 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. Southeast wind 8 to 11 mph.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny and hot, with a high near 90. East southeast wind 9 to 14 mph.

    High: 90 °F

    Hot

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 67. East wind 9 to 14 mph.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 88. East wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 88 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 67. East northeast wind 8 to 11 mph.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southeast wind 6 to 8 mph.
Wednesday
A slight chance of showers between 9am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 91. Breezy, with a south southeast wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Wednesday Night
Showers and thunderstorms, mainly before 1am. Low around 66. Breezy, with a south southeast wind 13 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny and hot, with a high near 93. Heat index values as high as 98. South wind 13 to 15 mph.
Thursday Night
Partly cloudy, with a low around 69. Southeast wind 8 to 11 mph.
Friday
Partly sunny and hot, with a high near 90. East southeast wind 9 to 14 mph.
Friday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. East wind 9 to 14 mph. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 88. East wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. East northeast wind 8 to 11 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NNE Chamberlain SD
 43.95°N 99.22°W (Elev. 1499 ft)
8:46 pm CDT Aug 12, 2025
9pm CDT Aug 12, 2025-6pm CDT Aug 19, 2025
 
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Additional Resources

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