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

19°F

-7°C

Humidity 70%
Wind Speed SE 12 mph
Barometer 29.95 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 24 Feb 3:35 am CST
Extended Forecast for

Guernsey IA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 17. Wind chill values as low as 5. South wind 10 to 13 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 42. Wind chill values as low as 5. South wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 42 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 20. Northwest wind 7 to 9 mph.

    Low: 20 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Increasing clouds, with a high near 32. Northwest wind around 6 mph. Little or no snow accumulation expected.

    High: 32 °F

    Mostly Sunny
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 21. East northeast wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Snow Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

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

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 17. Wind chill values as low as 5. South wind 10 to 13 mph.
Tuesday
Mostly cloudy, with a high near 42. Wind chill values as low as 5. South wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 20. Northwest wind 7 to 9 mph.
Wednesday
A 30 percent chance of snow after noon. Increasing clouds, with a high near 32. Northwest wind around 6 mph. Little or no snow accumulation expected.
Wednesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 21. East northeast wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 15.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 29.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guernsey IA
 41.66°N 92.34°W
Last Update:
3:16 am CST Feb 24, 2026
Forecast Valid:
3am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
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Additional Resources

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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