National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair and Breezy

42°F

6°C

Humidity 52%
Wind Speed NW 22 G 28 mph
Barometer 30.16 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 11 Mar 4:15 pm CDT
Extended Forecast for

Grinnell IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 39. Windy, with a west wind around 22 mph, with gusts as high as 31 mph.

    High: 39 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 25. West wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 53. Windy, with a south southwest wind 5 to 15 mph increasing to 18 to 28 mph. Winds could gust as high as 38 mph.

    High: 53 °F

    Sunny then
    Mostly Cloudy
    and Windy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 33. Windy, with a south southwest wind 25 to 28 mph becoming west after midnight. Winds could gust as high as 46 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance Rain
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 45. Windy, with a west northwest wind 16 to 26 mph, with gusts as high as 41 mph.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A slight chance of snow before 1pm, then a slight chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain and snow before 1am, then rain likely. Some thunder is also possible. Cloudy, with a low around 32. Breezy. Chance of precipitation is 70%.

    Low: 32 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely and
    Breezy

  • Sunday

    Sunday: Rain and snow. High near 39. Windy. Chance of precipitation is 80%.

    High: 39 °F

    Rain/Snow and
    Windy

Detailed Forecast

This Afternoon
Sunny, with a high near 39. Windy, with a west wind around 22 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 25. West wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday
Increasing clouds, with a high near 53. Windy, with a south southwest wind 5 to 15 mph increasing to 18 to 28 mph. Winds could gust as high as 38 mph.
Thursday Night
A 50 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 33. Windy, with a south southwest wind 25 to 28 mph becoming west after midnight. Winds could gust as high as 46 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 45. Windy, with a west northwest wind 16 to 26 mph, with gusts as high as 41 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29.
Saturday
A slight chance of snow before 1pm, then a slight chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 20%.
Saturday Night
A chance of rain and snow before 1am, then rain likely. Some thunder is also possible. Cloudy, with a low around 32. Breezy. Chance of precipitation is 70%.
Sunday
Rain and snow. High near 39. Windy. Chance of precipitation is 80%.
Sunday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 9. Windy.
Monday
Mostly sunny, with a high near 21. Windy.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
3:07 pm CDT Mar 11, 2026
Forecast Valid:
4pm CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation