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

16°F

-9°C

Humidity 70%
Wind Speed Calm
Barometer 30.58 in
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 23 Feb 12:15 pm CST
Extended Forecast for

Grinnell Regional Airport IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 20. West wind around 5 mph becoming calm.

    High: 20 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 12. Wind chill values as low as zero. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 21 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 40. Wind chill values as low as 5. Breezy, with a south wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 40 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Northwest wind 5 to 8 mph.

    Low: 17 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 32. Northwest wind around 5 mph becoming calm in the morning. Little or no snow accumulation expected.

    High: 32 °F

    Sunny then
    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Snow Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 20. West wind around 5 mph becoming calm.
Tonight
Partly cloudy, with a low around 12. Wind chill values as low as zero. Light south wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 40. Wind chill values as low as 5. Breezy, with a south wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Northwest wind 5 to 8 mph.
Wednesday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 32. Northwest wind around 5 mph becoming calm in the morning. Little or no snow accumulation expected.
Wednesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
Mostly clear, with a low around 23.
Friday
Sunny, with a high near 51.
Friday Night
Mostly clear, with a low around 26.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
10:51 am CST Feb 23, 2026
Forecast Valid:
12pm CST Feb 23, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation