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.

Overcast

74°F

23°C

Humidity 85%
Wind Speed SE 10 mph
Barometer 30.01 in (1015.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 7 Aug 10:53 pm CDT
Extended Forecast for

3 Miles SSE Marshalltown IA

Heat Advisory August 8, 01:00pm until August 8, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 70. South southeast wind around 9 mph.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southeast wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South southeast wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 68. West wind around 6 mph becoming southeast in the evening. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Heavy Rain

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 7am, then showers and thunderstorms likely after 7am. Partly sunny, with a high near 84. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 84 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 70. South southeast wind around 9 mph.
Friday
Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southeast wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South southeast wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 68. West wind around 6 mph becoming southeast in the evening. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Sunday
Showers likely and possibly a thunderstorm before 7am, then showers and thunderstorms likely after 7am. Partly sunny, with a high near 84. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Marshalltown IA
 41.99°N 92.89°W
Last Update:
10:22 pm CDT Aug 7, 2025
Forecast Valid:
12am CDT Aug 8, 2025-6pm CDT Aug 14, 2025
 
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