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

43°F

6°C

Humidity 82%
Wind Speed Calm
Barometer 29.73 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 10 Mar 4:35 am CDT
Extended Forecast for

3 Miles NNW Hartwick IA

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 9 mph in the morning.

    High: 67 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Mostly cloudy, with a low around 35. East northeast wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 35 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain and snow showers, mainly between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26. Northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 52. Breezy, with a light west southwest wind becoming south southwest 13 to 18 mph in the morning. Winds could gust as high as 26 mph.

    High: 52 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 47. Breezy.

    High: 47 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 9 mph in the morning.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Mostly cloudy, with a low around 35. East northeast wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of rain and snow showers, mainly between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around 26. Northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Thursday
Partly sunny, with a high near 52. Breezy, with a light west southwest wind becoming south southwest 13 to 18 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 35. Breezy.
Friday
Partly sunny, with a high near 47. Breezy.
Friday Night
Mostly cloudy, with a low around 31.
Saturday
Mostly cloudy, with a high near 53.
Saturday Night
Showers likely after 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Sunday
Rain and snow showers likely. Mostly cloudy, with a high near 41. Windy. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 15. Blustery.
Monday
Mostly sunny, with a high near 31.
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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:
4:17 am CDT Mar 10, 2026
Forecast Valid:
4am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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