50112 Weather (Grinnell, IA)

Weather forecast for: Grinnell IA

Last Update: 9:13 am CDT Sep 25, 2026

Today: Showers, mainly before 3pm. High near 62. East southeast wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: A 30 percent chance of showers, mainly after 4am. Cloudy, with a low around 56. East southeast wind 5 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Showers likely, mainly between 8am and 3pm. Cloudy, with a high near 59. Southeast wind around 9 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday Night: Showers likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 4am, then showers likely after 4am. Mostly cloudy, with a low around 56. Southeast wind 7 to 9 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 65. East southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night: Mostly cloudy, with a low around 57.

Monday: Partly sunny, with a high near 68.

Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58.

Tuesday: Showers. High near 67. Chance of precipitation is 80%.

Tuesday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

Wednesday: A 50 percent chance of showers. Partly sunny, with a high near 66.

Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 58.

Thursday: A 40 percent chance of showers. Partly sunny, with a high near 67.