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

60°F

16°C

Humidity 77%
Wind Speed S 14 mph
Barometer 29.76 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 23 Apr 7:15 am CDT
Extended Forecast for

3 Miles NNW Hartwick IA

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 76. Windy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Windy. Slight
    Chance
    T-storms then
    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am. Low around 49. Breezy, with a south wind 8 to 16 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    T-storms and
    Breezy

  • Friday

    Friday: A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 64. North northwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Clear, with a low around 40. North northwest wind 6 to 8 mph.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 66. North northeast wind 6 to 8 mph becoming east in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 53. Breezy. Chance of precipitation is 80%.

    Low: 53 °F

    Showers and
    Breezy

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 67. Breezy. Chance of precipitation is 80%.

    High: 67 °F

    Showers and
    Breezy

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 76. Windy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am. Low around 49. Breezy, with a south wind 8 to 16 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A slight chance of showers between 7am and 1pm. Mostly sunny, with a high near 64. North northwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
Clear, with a low around 40. North northwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 66. North northeast wind 6 to 8 mph becoming east in the afternoon.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 67.
Sunday Night
Showers and possibly a thunderstorm. Low around 53. Breezy. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 67. Breezy. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 42. Breezy.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
6:06 am CDT Apr 23, 2026
Forecast Valid:
7am CDT Apr 23, 2026-6pm CDT Apr 29, 2026
 
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Additional Resources

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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