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

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Light Rain and Breezy

70°F

21°C

Humidity 90%
Wind Speed S 21 G 36 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 14 Sep 11:53 pm CDT
Extended Forecast for

2 Miles WNW Le Grand IA

Flood Watch September 15, 12:43am until September 16, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 15, 12:43am until September 16, 01:00pm

    NOW until 1:00pm Wed

    Flood Watch

  • Overnight

    Low: 70 °F

    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before noon, then a slight chance of showers between noon and 1pm. High near 75. West southwest wind around 7 mph becoming north northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 75 °F

    Showers then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57. Calm wind becoming northeast around 6 mph after midnight. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 73. East wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 62. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 62 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Steady temperature around 70. South southwest wind 9 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm before noon, then a slight chance of showers between noon and 1pm. High near 75. West southwest wind around 7 mph becoming north northwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 57. Calm wind becoming northeast around 6 mph after midnight. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Showers and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 73. East wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Friday Night
Showers likely, mainly after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
Showers likely, mainly before 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 61.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 75.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Monday
Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Le Grand IA
 42.01°N 92.8°W
Last Update:
12:11 am CDT Sep 15, 2026
Forecast Valid:
12am CDT Sep 15, 2026-6pm CDT Sep 21, 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