National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Partly Cloudy

32°C

90°F

Humidity 65%
Wind Speed S 9 km/h
Barometer 30.00 in
Dewpoint 24°C (76°F)
Visibility 16 km
Heat Index39°C (103°F)
Last update 3 Jul 2:15 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32. South southwest wind 14 to 16 km/h.

    High: 32 °C

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 21. South wind 6 to 11 km/h becoming light.

    Low: 21 °C

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 33. South southwest wind 5 to 10 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 32 km/h.

    High: 33 °C

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 22. South wind 11 to 16 km/h.

    Low: 22 °C

    Partly Cloudy

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 31. Breezy, with a south southwest wind 16 to 26 km/h, with gusts as high as 39 km/h. New rainfall amounts between 2.5 and 5 mm possible.

    High: 31 °C

    Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    Low: 19 °C

    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 28.

    High: 28 °C

    Slight Chance
    T-storms

  • Sunday Night

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

    Low: 17 °C

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32. South southwest wind 14 to 16 km/h.
Tonight
Mostly clear, with a low around 21. South wind 6 to 11 km/h becoming light.
Independence Day
Sunny, with a high near 33. South southwest wind 5 to 10 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 32 km/h.
Friday Night
Partly cloudy, with a low around 22. South wind 11 to 16 km/h.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 31. Breezy, with a south southwest wind 16 to 26 km/h, with gusts as high as 39 km/h. New rainfall amounts between 2.5 and 5 mm possible.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 29.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 19.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 30.
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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:
11:22 am CDT Jul 3, 2025
Forecast Valid:
2pm CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation