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

71°F

22°C

Humidity 79%
Wind Speed SW 8 mph
Barometer 30.07 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 24 Jun 9:35 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Mostly sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the morning.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 57. West northwest wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 79. Calm wind becoming west northwest around 5 mph.

    High: 79 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Cloudy, then gradually becoming partly cloudy, with a low around 58. Calm wind becoming east northeast around 5 mph after midnight. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 78. East wind 6 to 9 mph.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 92. Windy.

    High: 92 °F

    Mostly Sunny
    and Windy

Detailed Forecast

Today
Mostly sunny, with a high near 82. Light and variable wind becoming west 5 to 10 mph in the morning.
Tonight
Partly cloudy, with a low around 57. West northwest wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 79. Calm wind becoming west northwest around 5 mph.
Thursday Night
A 30 percent chance of showers after 1am. Cloudy, then gradually becoming partly cloudy, with a low around 58. Calm wind becoming east northeast around 5 mph after midnight. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Partly sunny, with a high near 78. East wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Partly sunny, with a high near 82.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 92. Windy.
Sunday Night
Mostly clear, with a low around 73. Windy.
Monday
Sunny, with a high near 95. Windy.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Breezy.
Tuesday
Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
9:21 am CDT Jun 24, 2026
Forecast Valid:
9am CDT Jun 24, 2026-6pm CDT Jun 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