Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Partly Cloudy

70°F

21°C

Humidity 76%
Wind Speed SE 9 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 7 Sep 9:53 pm CDT
Extended Forecast for

Marshalltown IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. Southeast wind around 10 mph.

    Low: 66 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Partly sunny, with a high near 89. South southeast wind around 9 mph becoming west southwest in the afternoon.  New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall.  Low around 68. West northwest wind around 5 mph becoming light and variable  in the evening.  Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 68 °F

    Heavy Rain

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am.  Cloudy, then gradually becoming mostly sunny, with a high near 83. Calm wind becoming northwest around 6 mph in the morning.  New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Light northwest wind.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 84.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 66. Southeast wind around 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 89. South southeast wind around 9 mph becoming west southwest in the afternoon. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 68. West northwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 83. Calm wind becoming northwest around 6 mph in the morning. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Mostly clear, with a low around 57. Light northwest wind.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 58.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 58.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Marshalltown IA
 42.06°N 92.92°W
9:12 pm CDT Sep 7, 2026
10pm CDT Sep 7, 2026-6pm CDT Sep 14, 2026
 
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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