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

71°F

22°C

Humidity 26%
Wind Speed Calm
Barometer 29.65 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 9 Mar 4:15 pm CDT
Extended Forecast for

3 Miles WSW Montezuma IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 73. West southwest wind around 8 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers after 4pm. Sunny, with a high near 69. East wind 6 to 8 mph.

    High: 69 °F

    Sunny then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 36. North northeast wind 9 to 14 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 47. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 29 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Chance Rain
    and Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 73. West southwest wind around 8 mph.
Tonight
Clear, with a low around 44. Light and variable wind.
Tuesday
A 20 percent chance of showers after 4pm. Sunny, with a high near 69. East wind 6 to 8 mph.
Tuesday Night
A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 36. North northeast wind 9 to 14 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 47. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 29 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 27.
Thursday
Partly sunny, with a high near 55. Breezy.
Thursday Night
A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 36. Breezy.
Friday
Mostly cloudy, with a high near 49.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 55.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 42. Windy. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Montezuma IA
 41.57°N 92.58°W
Last Update:
4:11 pm CDT Mar 9, 2026
Forecast Valid:
4pm CDT Mar 9, 2026-6pm CDT Mar 15, 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