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

42°F

6°C

Humidity 53%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 16 Feb 1:35 am CST
Extended Forecast for

Grinnell Regional Airport IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. South southwest wind 6 to 9 mph.

    Low: 40 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 64. Southwest wind 5 to 13 mph, with gusts as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. Calm wind becoming southeast around 5 mph after midnight.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64. Windy, with a southeast wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 64 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before midnight. Partly cloudy, with a low around 47. Breezy, with a south southeast wind 15 to 18 mph becoming west southwest after midnight. Winds could gust as high as 28 mph.

    Low: 47 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 61. Windy.

    High: 61 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow before noon, then a chance of rain. Partly sunny, with a high near 52. Breezy. Chance of precipitation is 30%.

    High: 52 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.

    Low: 25 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. South southwest wind 6 to 9 mph.
Washington's Birthday
Mostly sunny, with a high near 64. Southwest wind 5 to 13 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 43. Calm wind becoming southeast around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 64. Windy, with a southeast wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 30 percent chance of rain, mainly before midnight. Partly cloudy, with a low around 47. Breezy, with a south southeast wind 15 to 18 mph becoming west southwest after midnight. Winds could gust as high as 28 mph.
Wednesday
Sunny, with a high near 61. Windy.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
A slight chance of rain and snow before noon, then a chance of rain. Partly sunny, with a high near 52. Breezy. Chance of precipitation is 30%.
Thursday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 36. Breezy.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
A 30 percent chance of snow. Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, 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:
10:35 pm CST Feb 15, 2026
Forecast Valid:
1am CST Feb 16, 2026-6pm CST Feb 22, 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