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

57°F

14°C

Humidity 46%
Wind Speed SW 15 mph
Barometer 29.92 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 21 Apr 3:55 am CDT
Extended Forecast for

3 Miles NNW Hartwick IA

  • Today

    Today: Sunny, with a high near 79. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. Northwest wind around 5 mph becoming light and variable.

    Low: 52 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Mostly Sunny
    and Breezy
    then Chance
    T-storms and
    Windy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 51. Breezy. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 51 °F

    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 52. Northwest wind around 5 mph becoming light and variable.
Wednesday
Sunny, with a high near 79. South wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind around 11 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 51. Breezy. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Partly sunny, with a high near 63.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 47.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 64.
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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:
3:07 am CDT Apr 21, 2026
Forecast Valid:
4am CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation