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

44°F

7°C

Humidity 60%
Wind Speed Calm
Barometer 29.73 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 7 Jan 6:15 pm CST
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South wind 5 to 8 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain, mainly after noon. High near 46. South southeast wind 5 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 46 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain likely before 3am, then a chance of rain and snow. Cloudy, with a low around 33. Northeast wind around 11 mph becoming northwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow before noon, then a slight chance of rain. Partly sunny, with a high near 40. North wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 28. North wind 3 to 8 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 32. Breezy.

    High: 32 °F

    Chance Snow
    and Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Blustery.

    Low: 16 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 36. South wind 5 to 8 mph.
Thursday
Rain, mainly after noon. High near 46. South southeast wind 5 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain likely before 3am, then a chance of rain and snow. Cloudy, with a low around 33. Northeast wind around 11 mph becoming northwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday
A slight chance of rain and snow before noon, then a slight chance of rain. Partly sunny, with a high near 40. North wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Friday Night
A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 28. North wind 3 to 8 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 32. Breezy.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Blustery.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly cloudy, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
5:26 pm CST Jan 7, 2026
Forecast Valid:
6pm CST Jan 7, 2026-6pm CST Jan 14, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation