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7-Day Forecast 41.75°N 92.72°W (Text-Only)
NWS Forecast for: Grinnell IA
Issued by: National Weather Service Des Moines, IA
Last Update: 6:33 pm CDT May 18, 2025		Print

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 49. Breezy, with an east wind 10 to 18 mph, with gusts as high as 28 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    T-storms and
    Breezy

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 63. Windy, with an east wind 22 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers
    Likely and
    Windy

  • Monday
    Night

    Monday Night: Showers and possibly a thunderstorm. Low around 53. Windy, with an east wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 53 °F

    T-storms and
    Windy


  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 64. Breezy, with an east wind 15 to 20 mph becoming south southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 64 °F

    Showers and
    Breezy


  • Tuesday
    Night

    Tuesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 45. Northwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Showers
    Likely


  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 55. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance
    Showers


  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers


  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny



  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear





    • Tonight: A 50 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 49. Breezy, with an east wind 10 to 18 mph, with gusts as high as 28 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Monday: Showers and thunderstorms likely, mainly before 1pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 63. Windy, with an east wind 22 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Monday Night: Showers and possibly a thunderstorm. Low around 53. Windy, with an east wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Tuesday: Showers and possibly a thunderstorm. High near 64. Breezy, with an east wind 15 to 20 mph becoming south southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Tuesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 45. Northwest wind 11 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 55. New precipitation amounts of less than a tenth of an inch possible.

    Wednesday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 42.

    Thursday: Mostly sunny, with a high near 64.

    Thursday Night: Mostly clear, with a low around 42.

    Friday: Mostly sunny, with a high near 67.

    Friday Night: Mostly cloudy, with a low around 47.

    Saturday: Mostly sunny, with a high near 69.

    Saturday Night: Partly cloudy, with a low around 49.

    Sunday: A 30 percent chance of showers. Partly sunny, with a high near 69.


    Grinnell IA
     41.75°N 92.72°W

    Visit your local NWS office at: https://www.weather.gov/desmoines