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Hurricane Isaias to Approach the Northern Gulf Coast on Friday

Isaias is expected to approach the northern Gulf Coast as a strong hurricane on Friday, bringing life-threatening storm surge, damaging winds, heavy rain, and severe thunderstorms across the region and Southeast into the weekend, with risks of flooding and tornadoes. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

73°F

23°C

Humidity 35%
Wind Speed Vrbl 3 mph
Barometer 30.11 in (1019.6 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 8 Oct 12:53 pm CDT
Extended Forecast for

Grundy Center IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 75. Calm wind.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 1am. Increasing clouds, with a low around 54. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 78. Southeast wind 6 to 13 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 63. South wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Breezy, with a south wind 14 to 18 mph, with gusts as high as 25 mph.

    High: 81 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 75. Calm wind.
Tonight
A chance of showers, with thunderstorms also possible after 1am. Increasing clouds, with a low around 54. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers and thunderstorms, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 78. Southeast wind 6 to 13 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Clear, with a low around 63. South wind 10 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 81. Breezy, with a south wind 14 to 18 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 60.
Columbus Day
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.79°W
Last Update:
11:37 am CDT Oct 8, 2026
Forecast Valid:
1pm CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
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