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

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

A Few Clouds

80°F

27°C

Humidity 60%
Wind Speed N 15 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 1 Aug 5:53 pm CDT
Extended Forecast for

Le Grand IA

  • Tonight

    Tonight: Mostly clear, with a low around 61. North wind 5 to 9 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 81. North northeast wind 5 to 7 mph.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 82 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Southeast wind 3 to 6 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 61. North wind 5 to 9 mph.
Sunday
Mostly sunny, with a high near 81. North northeast wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, then gradually becoming sunny, with a high near 82. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61. Southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Le Grand IA
 42.01°N 92.77°W
Last Update:
5:43 pm CDT Aug 1, 2026
Forecast Valid:
6pm CDT Aug 1, 2026-6pm CDT Aug 8, 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