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

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Hazardous Weather Conditions

Current conditions at

BRITTON (KBTN)

Lat: 45.82°NLon: 97.74°WElev: 1318ft.

A Few Clouds

81°F

27°C

Humidity 94%
Wind Speed SE 8 mph
Barometer 29.96 in
Dewpoint 79°F (26°C)
Visibility 9.00 mi
Heat Index89°F (32°C)
Last update 6 Sep 11:15 am CDT
Extended Forecast for

Pierpont SD

  • Today

    Today: A chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Labor Day

    Labor Day: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a south wind 15 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. Breezy, with a south southeast wind 13 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.

    Low: 69 °F

    Breezy.
    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. West southwest wind 8 to 15 mph becoming northwest in the morning. Winds could gust as high as 26 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. West wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. West northwest wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 80 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southeast wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Labor Day
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a south wind 15 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. Breezy, with a south southeast wind 13 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 80. West southwest wind 8 to 15 mph becoming northwest in the morning. Winds could gust as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 57. West wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 75. West northwest wind 10 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm.
Thursday
Sunny, with a high near 80. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 57.
Saturday
A slight chance of showers. Mostly sunny, with a high near 72. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pierpont SD
 45.5°N 97.83°W (Elev. 1480 ft)
Last Update:
11:21 am CDT Sep 6, 2026
Forecast Valid:
11am CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation