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

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

38°F

3°C

Humidity 41%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 29 Mar 3:55 am CDT
Extended Forecast for

Montezuma IA

  • Today

    Today: Increasing clouds, with a high near 69. Breezy, with a south wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 69 °F

    Increasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 47. South wind 6 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 83. Breezy, with a south southwest wind 7 to 16 mph, with gusts as high as 25 mph.

    High: 83 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 71. Breezy, with a south southwest wind 14 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 36. Breezy. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain showers before 1am, then a chance of rain and snow showers. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.

    Low: 32 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.

    High: 45 °F

    Showers
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 69. Breezy, with a south wind 8 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 47. South wind 6 to 10 mph.
Monday
Increasing clouds, with a high near 83. Breezy, with a south southwest wind 7 to 16 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 71. Breezy, with a south southwest wind 14 to 18 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 36. Breezy. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 48.
Wednesday Night
A chance of rain showers before 1am, then a chance of rain and snow showers. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.
Thursday
Showers likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 34.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 60.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 54. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Montezuma IA
 41.57°N 92.52°W
Last Update:
2:43 am CDT Mar 29, 2026
Forecast Valid:
4am CDT Mar 29, 2026-6pm CDT Apr 4, 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