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

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Overcast

63°F

17°C

Humidity 93%
Wind Speed SE 9 mph
Barometer 30.21 in
Dewpoint 61°F (16°C)
Visibility 7.00 mi
Last update 15 Oct 10:35 am CDT
Extended Forecast for

3 Miles WSW Montezuma IA

  • Today

    Today: A 20 percent chance of showers. Partly sunny, with a high near 72. East wind around 6 mph.

    High: 72 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers. Mostly cloudy, with a low around 57. East southeast wind 6 to 8 mph.

    Low: 57 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 79. East southeast wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61. South southeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. South southwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 55. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 55 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers. Partly sunny, with a high near 72. East wind around 6 mph.
Tonight
A 20 percent chance of showers. Mostly cloudy, with a low around 57. East southeast wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 79. East southeast wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 61. South southeast wind around 9 mph, with gusts as high as 20 mph.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. South southwest wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 55. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 30 percent chance of showers, mainly before 1pm. Mostly sunny, with a high near 69.
Saturday Night
A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 42.
Sunday
Sunny, with a high near 61.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 67. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Montezuma IA
 41.57°N 92.58°W
Last Update:
9:31 am CDT Oct 15, 2025
Forecast Valid:
10am CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
Forecast Discussion
 
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Additional Resources

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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