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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Mostly Cloudy

76°F

24°C

Humidity 88%
Wind Speed SE 12 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 18 Sep 6:54 pm CDT
Extended Forecast for

Des Moines IA

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after midnight. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 70. Southeast wind 7 to 9 mph, with gusts as high as 18 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Southeast wind around 7 mph becoming west northwest in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. North wind around 7 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 68. North northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Cloudy, with a low around 58. East northeast wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely. Cloudy, with a high near 61. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after midnight. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 70. Southeast wind 7 to 9 mph, with gusts as high as 18 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Southeast wind around 7 mph becoming west northwest in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. North wind around 7 mph. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 68. North northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of showers. Cloudy, with a low around 58. East northeast wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers likely. Cloudy, with a high near 61. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 54.
Tuesday
Mostly cloudy, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Des Moines IA
 41.58°N 93.63°W
Last Update:
5:36 pm CDT Sep 18, 2026
Forecast Valid:
7pm CDT Sep 18, 2026-6pm CDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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