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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles NNW Hartwick IA

  • Tonight

    Tonight: Patchy blowing snow before 7pm. Partly cloudy, with a low around 3. Wind chill values as low as -5. Windy, with a northwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.

    Low: 3 °F

    Patchy
    Blowing Snow
    and Windy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after 5pm. Increasing clouds, with a high near 27. Wind chill values as low as -5. Light and variable wind becoming south 5 to 10 mph in the afternoon. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Sunny then
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 24. South southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 24 °F

    Snow Likely
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Sunny, with a high near 46. South wind around 6 mph becoming west in the afternoon.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. South wind 3 to 6 mph.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy blowing snow before 7pm. Partly cloudy, with a low around 3. Wind chill values as low as -5. Windy, with a northwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
A 30 percent chance of snow, mainly after 5pm. Increasing clouds, with a high near 27. Wind chill values as low as -5. Light and variable wind becoming south 5 to 10 mph in the afternoon. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 24. South southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday
Sunny, with a high near 46. South wind around 6 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 34. South wind 3 to 6 mph.
Thursday
Sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
2:27 pm CDT Mar 16, 2026
Forecast Valid:
5pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation