Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

72°F

22°C

Humidity 97%
Wind Speed N 6 mph
Barometer 30.10 in (1018.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 20 Aug 8:53 am CDT
Extended Forecast for

3 Miles WSW Garwin IA

  • Today

    Today: Sunny, with a high near 83. North northeast wind around 7 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. East wind 3 to 6 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 79. East wind 3 to 5 mph.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Light and variable wind.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 81. Calm wind becoming south southwest around 6 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 59. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 83. North northeast wind around 7 mph.
Tonight
Mostly clear, with a low around 63. East wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 79. East wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 60. Light and variable wind.
Friday
Mostly sunny, with a high near 81. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 74.
Saturday Night
Clear, with a low around 52.
Sunday
Sunny, with a high near 68.
Sunday Night
Clear, with a low around 47.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Garwin IA
 42.08°N 92.74°W
6:34 am CDT Aug 20, 2025
9am CDT Aug 20, 2025-6pm CDT Aug 26, 2025
 
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Additional Resources

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Hourly Weather Forecast

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