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.

Overcast

59°F

15°C

Humidity 41%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 8 Apr 7:55 pm CDT
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 41. Breezy, with a southwest wind 13 to 18 mph becoming light west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly after 4pm. High near 60. North wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Mostly Sunny
    then Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 42. North northeast wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 42 °F

    Showers

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 57. North northeast wind 6 to 10 mph.

    High: 57 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 61. Breezy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Windy. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely and
    Windy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 62. Windy.

    Low: 62 °F

    Chance
    Showers and
    Windy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 41. Breezy, with a southwest wind 13 to 18 mph becoming light west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm, mainly after 4pm. High near 60. North wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm. Low around 42. North northeast wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 57. North northeast wind 6 to 10 mph.
Friday Night
Mostly clear, with a low around 38. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 61. Breezy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 55.
Sunday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Windy. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62. Windy.
Monday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 80. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 58. Breezy. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 70. Breezy.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 36.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 52.
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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:
6:11 pm CDT Apr 8, 2026
Forecast Valid:
8pm CDT Apr 8, 2026-6pm CDT Apr 15, 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