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Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

73°F

23°C

Humidity 69%
Wind Speed S 14 G 23 mph
Barometer 29.84 in (1009.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 20 Jun 3:53 am CDT
Extended Forecast for

6 Miles E Garwin IA

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

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 67. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    T-storms
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 91. Breezy, with a south wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 91 °F

    Breezy.
    T-storms
    Likely then
    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 77. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 30 mph.

    Low: 77 °F

    Clear and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 103. Windy, with a south southwest wind 21 to 23 mph, with gusts as high as 34 mph.

    High: 96 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 31 mph.

    Low: 76 °F

    Clear and
    Windy

  • Sunday

    Sunday: Sunny, with a high near 95. Windy.

    High: 95 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Breezy.

    Low: 75 °F

    Breezy.
    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 67. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 91. Breezy, with a south wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Clear, with a low around 77. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 96. Heat index values as high as 103. Windy, with a south southwest wind 21 to 23 mph, with gusts as high as 34 mph.
Saturday Night
Clear, with a low around 76. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 95. Windy.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Breezy.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.
Monday Night
Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 85. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Garwin IA
 42.12°N 92.56°W
Last Update:
3:34 am CDT Jun 20, 2025
Forecast Valid:
4am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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