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

40°F

4°C

Humidity 82%
Wind Speed NE 9 mph
Barometer 29.79 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 10 Mar 8:15 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Increasing clouds, with a high near 66. East northeast wind 6 to 9 mph.

    High: 66 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers after 2am. Increasing clouds, with a low around 36. North northeast wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain and snow showers before 10am, then a slight chance of rain showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Windy, with a north northwest wind 16 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 45 °F

    Windy. Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Clear, with a low around 26. North northwest wind 9 to 14 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Clear

  • Thursday

    Thursday: Partly sunny, with a high near 54. Windy, with a south southwest wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 54 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Windy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 48. Breezy.

    High: 48 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 66. East northeast wind 6 to 9 mph.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers after 2am. Increasing clouds, with a low around 36. North northeast wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain and snow showers before 10am, then a slight chance of rain showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. Windy, with a north northwest wind 16 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday Night
Clear, with a low around 26. North northwest wind 9 to 14 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.
Thursday
Partly sunny, with a high near 54. Windy, with a south southwest wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.
Thursday Night
A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 36. Breezy.
Friday
Mostly cloudy, with a high near 48. Breezy.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 55.
Saturday Night
Showers likely after 1am. Mostly cloudy, with a low around 34. 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 16. Windy.
Monday
Mostly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.73°N 92.75°W
Last Update:
6:16 am CDT Mar 10, 2026
Forecast Valid:
8am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation