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

41°F

5°C

Humidity 67%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 11 Apr 7:15 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 53. Southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 53 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a temperature rising to around 59 by 5am. Breezy, with a south southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F⇑

    Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Sunday

    Sunday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 69. Windy, with a south southwest wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Windy. Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south southwest wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 78. Breezy, with a south wind 8 to 16 mph, with gusts as high as 24 mph.

    High: 78 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 64. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Breezy.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Breezy. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely and
    Breezy

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 53. Southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a temperature rising to around 59 by 5am. Breezy, with a south southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 69. Windy, with a south southwest wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 59. Breezy, with a south southwest wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Partly sunny, with a high near 78. Breezy, with a south wind 8 to 16 mph, with gusts as high as 24 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 64. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Breezy.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 57. Breezy. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers. Mostly sunny, with a high near 76.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 54.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers. Mostly clear, with a low around 53.
Friday
A 50 percent chance of showers. Mostly sunny, with a high near 73. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
5:17 am CDT Apr 11, 2026
Forecast Valid:
7am CDT Apr 11, 2026-6pm CDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation