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

65°F

18°C

Humidity 33%
Wind Speed Calm
Barometer 29.68 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 9 Mar 12:55 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. West southwest wind 5 to 9 mph becoming light west.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 44. Calm wind.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 66. Light northeast wind becoming east 5 to 9 mph in the morning.

    High: 66 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 36. Breezy, with a north northeast wind 10 to 16 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 47. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 53. Windy.

    High: 53 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Windy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 37. Breezy.

    Low: 37 °F

    Chance Rain
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 50. Breezy.

    High: 50 °F

    Partly Sunny
    and Breezy
    then Partly
    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 70. West southwest wind 5 to 9 mph becoming light west.
Tonight
Clear, with a low around 44. Calm wind.
Tuesday
Increasing clouds, with a high near 66. Light northeast wind becoming east 5 to 9 mph in the morning.
Tuesday Night
A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 36. Breezy, with a north northeast wind 10 to 16 mph, with gusts as high as 23 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. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
Partly sunny, with a high near 53. Windy.
Thursday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 37. Breezy.
Friday
Partly sunny, with a high near 50. Breezy.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Mostly cloudy, with a high near 51.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 48. Windy. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
12:02 pm CDT Mar 9, 2026
Forecast Valid:
1pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation