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.

Overcast

44°F

7°C

Humidity 28%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 23 Mar 8:55 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: A chance of sprinkles before 11pm. Cloudy, then gradual clearing toward daybreak, with a low around 33. Calm wind becoming south southeast around 5 mph after midnight. Winds could gust as high as 18 mph.

    Low: 33 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: A chance of sprinkles after 5pm. Partly sunny, with a high near 59. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 59 °F

    Chance
    Sprinkles

  • Tuesday Night

    Tuesday Night: A chance of sprinkles before 7pm. Mostly cloudy, with a low around 42. South southeast wind around 8 mph.

    Low: 42 °F

    Chance
    Sprinkles

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. South southwest wind 6 to 9 mph.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. Light south wind.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 75. Breezy.

    High: 75 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 32. Windy.

    Low: 32 °F

    Slight Chance
    Rain and
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 47. Breezy.

    High: 47 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of sprinkles before 11pm. Cloudy, then gradual clearing toward daybreak, with a low around 33. Calm wind becoming south southeast around 5 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
A chance of sprinkles after 5pm. Partly sunny, with a high near 59. South wind 5 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
A chance of sprinkles before 7pm. Mostly cloudy, with a low around 42. South southeast wind around 8 mph.
Wednesday
Partly sunny, with a high near 74. South southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 53. Light south wind.
Thursday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 75. Breezy.
Thursday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 32. Windy.
Friday
Mostly sunny, with a high near 47. Breezy.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
8:47 pm CDT Mar 23, 2026
Forecast Valid:
9pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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