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Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair and Windy

80°F

27°C

Humidity 67%
Wind Speed S 26 G 41 mph
Barometer 29.79 in (1007.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Jun 1:53 pm CDT
Extended Forecast for

Grundy Center IA

Heat Advisory June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. Windy, with a south wind around 21 mph, with gusts as high as 31 mph.

    High: 91 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 76. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 32 mph.

    Low: 76 °F

    Mostly Clear
    and Windy

  • Saturday

    Saturday: Sunny, with a high near 95. Heat index values as high as 105. Windy, with a south southwest wind 23 to 26 mph, with gusts as high as 38 mph.

    High: 95 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Windy, with a south southwest wind 20 to 22 mph, with gusts as high as 32 mph.

    Low: 77 °F

    Mostly Clear
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 95. Windy, with a south wind 18 to 25 mph, with gusts as high as 34 mph.

    High: 95 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. Windy.

    Low: 75 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 93. Breezy. Chance of precipitation is 60%.

    High: 93 °F

    Breezy. Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 91. Windy, with a south wind around 21 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 76. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 32 mph.
Saturday
Sunny, with a high near 95. Heat index values as high as 105. Windy, with a south southwest wind 23 to 26 mph, with gusts as high as 38 mph.
Saturday Night
Mostly clear, with a low around 77. Windy, with a south southwest wind 20 to 22 mph, with gusts as high as 32 mph.
Sunday
Sunny, with a high near 95. Windy, with a south wind 18 to 25 mph, with gusts as high as 34 mph.
Sunday Night
Mostly clear, with a low around 75. Windy.
Monday
Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 93. Breezy. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.
Tuesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 88. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.79°W
Last Update:
2:07 pm CDT Jun 20, 2025
Forecast Valid:
2pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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