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

7°F

-14°C

Humidity 72%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 29 Jan 7:15 am CST
Extended Forecast for

Grinnell Regional Airport IA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 16. Wind chill values as low as -5. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 16 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around -1. Wind chill values as low as -10. Calm wind becoming north around 6 mph after midnight.

    Low: -1 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 12. Wind chill values as low as -15. Blustery, with a north wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 12 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Blustery

  • Friday Night

    Friday Night: Mostly clear, with a low around 0. Wind chill values as low as -10. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 0 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 20. North northwest wind around 6 mph becoming calm in the morning.

    High: 20 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Snow likely, mainly after noon. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.

    High: 27 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 16. Wind chill values as low as -5. North northeast wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around -1. Wind chill values as low as -10. Calm wind becoming north around 6 mph after midnight.
Friday
Mostly sunny, with a high near 12. Wind chill values as low as -15. Blustery, with a north wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 0. Wind chill values as low as -10. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 20. North northwest wind around 6 mph becoming calm in the morning.
Saturday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around 8.
Sunday
Snow likely, mainly after noon. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 29.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 17.
Wednesday
Partly sunny, with a high near 28.
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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:
6:52 am CST Jan 29, 2026
Forecast Valid:
7am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation