National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

26°F

-3°C

Humidity 71%
Wind Speed Calm
Barometer 29.83 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 25 Feb 11:35 am CST
Extended Forecast for

3 Miles NNW Hartwick IA

  • Today

    Today: A 20 percent chance of snow after 5pm. Increasing clouds, with a high near 31. North northwest wind 5 to 9 mph becoming light in the afternoon.

    High: 31 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Snow likely, mainly before 9pm. Mostly cloudy, with a low around 21. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 21 °F

    Snow Likely
    then Chance
    Snow

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Southwest wind around 6 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Today
A 20 percent chance of snow after 5pm. Increasing clouds, with a high near 31. North northwest wind 5 to 9 mph becoming light in the afternoon.
Tonight
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 21. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Mostly clear, with a low around 27. Southwest wind around 6 mph.
Friday
Sunny, with a high near 56. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 24.
Saturday
A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 15.
Sunday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 29.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 33.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 18.
Tuesday
A 30 percent chance of snow. Partly sunny, with a high near 36.
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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:
10:57 am CST Feb 25, 2026
Forecast Valid:
11am CST Feb 25, 2026-6pm CST Mar 3, 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