National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hurricane and Storm Surge Watches Issued for the Northern Gulf Coast for Strengthening Tropical Storm Isaias

Tropical Storm Isaias is forecast to track toward the central Gulf Coast while strengthening into a hurricane on Thursday. There is an increasing risk of damaging hurricane-force winds and life-threatening storm surge impacts along portions of the northern Gulf Coast Friday into Saturday. Isaias will bring heavy rainfall to the central Gulf Coast and much of the Southeast Friday into the weekend. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

73°F

23°C

Humidity 30%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 7 Oct 6:15 pm CDT
Extended Forecast for

Montezuma IA

  • Tonight

    Tonight: Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after midnight. Increasing clouds, with a low around 55. Calm wind becoming east around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, then gradually becoming sunny, with a high near 78. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Clear, with a low around 62. South wind around 8 mph.

    Low: 62 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm.
Thursday
Mostly sunny, with a high near 73. Calm wind.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after midnight. Increasing clouds, with a low around 55. Calm wind becoming east around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, then gradually becoming sunny, with a high near 78. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 62. South wind around 8 mph.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 60.
Columbus Day
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montezuma IA
 41.57°N 92.55°W
Last Update:
5:51 pm CDT Oct 7, 2026
Forecast Valid:
6pm CDT Oct 7, 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