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

28°F

-2°C

Humidity 66%
Wind Speed Calm
Barometer 29.66 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 19 Feb 1:35 am CST
Extended Forecast for

3 Miles NNW Hartwick IA

  • Overnight

    Overnight: Partly cloudy, with a low around 31. North wind 6 to 8 mph.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 47. North northeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Mostly Cloudy
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain and snow, becoming all snow after 11pm. Low around 25. Blustery, with a north wind 15 to 18 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Blustery.
    Rain/Snow
    then Snow

  • Friday

    Friday: A 20 percent chance of snow before 9am. Partly sunny, with a high near 34. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 34 °F

    Breezy.
    Slight Chance
    Snow then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 18. Northwest wind 7 to 9 mph.

    Low: 18 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 27. Blustery.

    High: 27 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 31. North wind 6 to 8 mph.
Thursday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 47. North northeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain and snow, becoming all snow after 11pm. Low around 25. Blustery, with a north wind 15 to 18 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
A 20 percent chance of snow before 9am. Partly sunny, with a high near 34. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 18. Northwest wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 14.
Sunday
Mostly sunny, with a high near 27. Blustery.
Sunday Night
Mostly clear, with a low around 10.
Monday
Sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 48. Breezy.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly sunny, with a high near 47.
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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:
1:17 am CST Feb 19, 2026
Forecast Valid:
1am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation