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

77°F

25°C

Humidity 25%
Wind Speed S 10 G 17 mph
Barometer 29.83 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 16 Apr 4:15 pm CDT
Extended Forecast for

Grinnell IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. South wind around 9 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 77. Windy, with a south southeast wind 14 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Windy. Slight
    Chance
    T-storms then
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 1am. Low around 34. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Breezy.
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 49. Breezy, with a west northwest wind 16 to 20 mph, with gusts as high as 28 mph.

    High: 49 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 77. South wind around 9 mph.
Tonight
Mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 21 mph.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 77. Windy, with a south southeast wind 14 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers between 10pm and 1am. Low around 34. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Sunny, with a high near 49. Breezy, with a west northwest wind 16 to 20 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
2:36 pm CDT Apr 16, 2026
Forecast Valid:
4pm CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation