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.

Partly Cloudy

44°F

7°C

Humidity 68%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 16 Feb 10:15 pm CST
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. Calm wind becoming south around 6 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 63. Windy, with a southeast wind 5 to 10 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 63 °F

    Mostly Cloudy
    and Windy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain and thunderstorms before midnight. Partly cloudy, with a low around 45. Breezy, with a south southeast wind 16 to 18 mph becoming west southwest after midnight. Winds could gust as high as 29 mph.

    Low: 45 °F

    Breezy.
    Chance Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 63. Breezy, with a west wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 63 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36. West wind 5 to 7 mph becoming light and variable.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow before noon, then rain likely. Partly sunny, with a high near 56. Breezy. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Chance
    Rain/Snow
    then Rain
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 50%.

    Low: 26 °F

    Chance
    Rain/Snow and
    Blustery

  • Friday

    Friday: A 20 percent chance of snow before noon. Partly sunny, with a high near 38. Breezy.

    High: 38 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. Calm wind becoming south around 6 mph.
Tuesday
Mostly cloudy, with a high near 63. Windy, with a southeast wind 5 to 10 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
A 30 percent chance of rain and thunderstorms before midnight. Partly cloudy, with a low around 45. Breezy, with a south southeast wind 16 to 18 mph becoming west southwest after midnight. Winds could gust as high as 29 mph.
Wednesday
Sunny, with a high near 63. Breezy, with a west wind 10 to 20 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 36. West wind 5 to 7 mph becoming light and variable.
Thursday
A chance of rain and snow before noon, then rain likely. Partly sunny, with a high near 56. Breezy. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 50%.
Friday
A 20 percent chance of snow before noon. Partly sunny, with a high near 38. Breezy.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 38.
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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:
10:12 pm CST Feb 16, 2026
Forecast Valid:
10pm CST Feb 16, 2026-6pm CST Feb 23, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation