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

5°F

-15°C

Humidity 71%
Wind Speed Calm
Barometer 30.38 in
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Last update 29 Jan 9:55 pm CST
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: Partly cloudy, with a low around -1. Light north wind.

    Low: -1 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 12. Wind chill values as low as -15. Blustery, with a north wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 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 14 mph, with gusts as high as 23 mph.

    Low: 0 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 20. Wind chill values as low as -10. 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. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 8 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 28.

    High: 28 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around -1. Light north wind.
Friday
Mostly sunny, with a high near 12. Wind chill values as low as -15. Blustery, with a north wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Mostly clear, with a low around 0. Wind chill values as low as -10. North northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 20. Wind chill values as low as -10. 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. Calm wind becoming south 5 to 7 mph after midnight.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 30.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 17.
Wednesday
Partly sunny, with a high near 29.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
7:38 pm CST Jan 29, 2026
Forecast Valid:
10pm CST Jan 29, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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