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

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Thunderstorm Heavy Rain Fog/Mist

70°F

21°C

Humidity 93%
Wind Speed N 12 G 25 mph
Barometer 30.13 in (1019.8 mb)
Dewpoint 68°F (20°C)
Visibility 1.50 mi
Last update 6 Sep 6:54 pm CDT
Extended Forecast for

De Soto IA

Severe T-storm Watch until September 6, 10:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch until September 6, 10:00pm

    NOW until 10:00pm Sun

    Severe T-storm Watch

  • Tonight

    Low: 66 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Labor Day

    Labor Day: A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 86. Southeast wind 9 to 13 mph, with gusts as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 86 °F

    Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. Southeast wind 11 to 13 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 106. South wind around 11 mph. Chance of precipitation is 30%.

    High: 93 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 69. Southwest wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers after 3am. Some of the storms could be severe. Mostly cloudy, with a low around 66. East southeast wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Labor Day
A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 86. Southeast wind 9 to 13 mph, with gusts as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Partly cloudy, with a low around 69. Southeast wind 11 to 13 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 106. South wind around 11 mph. Chance of precipitation is 30%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 69. Southwest wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 30 percent chance of showers before 1pm. Sunny, with a high near 85.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
De Soto IA
 41.54°N 94.01°W
Last Update:
5:51 pm CDT Sep 6, 2026
Forecast Valid:
7pm CDT Sep 6, 2026-6pm CDT Sep 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation