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

39°F

4°C

Humidity 49%
Wind Speed Calm
Barometer 30.38 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 6 Apr 8:35 pm CDT
Extended Forecast for

3 Miles NNW Hartwick IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. North wind 7 to 9 mph.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow showers between noon and 4pm, then a chance of rain showers. Partly sunny, with a high near 42. East northeast wind 7 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 42 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a steady temperature around 39. Breezy, with a southeast wind 11 to 17 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 68. Windy, with a south southwest wind 18 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Chance
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 45. Breezy, with a south southwest wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 63. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.

    Low: 41 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 60.

    High: 60 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. North wind 7 to 9 mph.
Tuesday
A slight chance of snow showers between noon and 4pm, then a chance of rain showers. Partly sunny, with a high near 42. East northeast wind 7 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a steady temperature around 39. Breezy, with a southeast wind 11 to 17 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 68. Windy, with a south southwest wind 18 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 45. Breezy, with a south southwest wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 63. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Friday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 60.
Friday Night
Partly cloudy, with a low around 41.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 64.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Sunday
Showers likely. Mostly cloudy, with a high near 73. Breezy. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 70%.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 76. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
6:16 pm CDT Apr 6, 2026
Forecast Valid:
8pm CDT Apr 6, 2026-6pm CDT Apr 13, 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