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

44°F

7°C

Humidity 60%
Wind Speed Calm
Barometer 29.84 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 26 Feb 2:15 pm CST
Extended Forecast for

3 Miles NNW Hartwick IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 47. West wind 8 to 10 mph.

    High: 47 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. Southwest wind 5 to 7 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57. Breezy, with a southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 57 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Increasing clouds, with a low around 24. West wind 7 to 9 mph becoming north northeast after midnight.

    Low: 24 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of snow. Partly sunny, with a high near 32. North northeast wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 32 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 47. West wind 8 to 10 mph.
Tonight
Mostly clear, with a low around 28. Southwest wind 5 to 7 mph.
Friday
Sunny, with a high near 57. Breezy, with a southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Increasing clouds, with a low around 24. West wind 7 to 9 mph becoming north northeast after midnight.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 32. North northeast wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 14.
Sunday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 30.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 26.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
1:27 pm CST Feb 26, 2026
Forecast Valid:
2pm CST Feb 26, 2026-6pm CST Mar 4, 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