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

22°F

-6°C

Humidity 67%
Wind Speed NE 7 mph
Barometer 30.36 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 7 Feb 2:55 am CST
Extended Forecast for

Hartwick IA

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 21. Northeast wind around 6 mph.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 33. Light and variable wind becoming south southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 33 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. South southeast wind around 10 mph, with gusts as high as 18 mph.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 40. East southeast wind 5 to 9 mph.

    High: 40 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. Light and variable wind becoming south southeast around 5 mph after midnight.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 21. Northeast wind around 6 mph.
Saturday
Mostly sunny, with a high near 33. Light and variable wind becoming south southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 24. South southeast wind around 10 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 40. East southeast wind 5 to 9 mph.
Sunday Night
Partly cloudy, with a low around 27. Light and variable wind becoming south southeast around 5 mph after midnight.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Friday
A chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hartwick IA
 41.79°N 92.37°W
Last Update:
2:07 am CST Feb 7, 2026
Forecast Valid:
3am CST Feb 7, 2026-6pm CST Feb 13, 2026
 
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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