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.

Fair

81°F

27°C

Humidity 47%
Wind Speed W 12 G 16 mph
Barometer 29.99 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 24 Jun 3:15 pm CDT
Extended Forecast for

Grinnell IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. West wind around 10 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. West northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 58 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 79. Light west northwest wind.

    High: 79 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 59. Light and variable wind.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 7am. Partly sunny, with a high near 78. East wind 6 to 11 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 92. Windy.

    High: 92 °F

    Sunny and
    Windy

Detailed Forecast

This Afternoon
Sunny, with a high near 82. West wind around 10 mph.
Tonight
Increasing clouds, with a low around 58. West northwest wind 5 to 9 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 79. Light west northwest wind.
Thursday Night
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 59. Light and variable wind.
Friday
A 30 percent chance of showers, mainly before 7am. Partly sunny, with a high near 78. East wind 6 to 11 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 82.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.
Sunday
Sunny, with a high near 92. Windy.
Sunday Night
Mostly clear, with a low around 73. Breezy.
Monday
Sunny, with a high near 93. Windy.
Monday Night
Mostly clear, with a low around 73. Windy.
Tuesday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
3:06 pm CDT Jun 24, 2026
Forecast Valid:
3pm 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