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.

Fair

91°F

33°C

Humidity 56%
Wind Speed S 8 mph
Barometer 29.93 in (1012.5 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 1 Sep 2:53 pm CDT
Extended Forecast for

Marshalltown IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 93. Heat index values as high as 101. South southwest wind around 8 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 72. South southeast wind 5 to 7 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 93. Heat index values as high as 100. Southwest wind 6 to 9 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms after 5am. Mostly clear, with a low around 73. South southwest wind around 6 mph.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 92. Light south wind increasing to 5 to 9 mph in the morning.

    High: 92 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 93. Heat index values as high as 101. South southwest wind around 8 mph.
Tonight
Increasing clouds, with a low around 72. South southeast wind 5 to 7 mph.
Wednesday
Sunny, with a high near 93. Heat index values as high as 100. Southwest wind 6 to 9 mph.
Wednesday Night
A 10 percent chance of showers and thunderstorms after 5am. Mostly clear, with a low around 73. South southwest wind around 6 mph.
Thursday
A 10 percent chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 92. Light south wind increasing to 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 72.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 70.
Saturday
Mostly sunny, with a high near 93.
Saturday Night
Partly cloudy, with a low around 69.
Sunday
A 40 percent chance of showers. Mostly sunny, with a high near 88.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Labor Day
Partly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marshalltown IA
 42.04°N 92.89°W
Last Update:
1:51 pm CDT Sep 1, 2026
Forecast Valid:
3pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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