50112 Weather (Grinnell, IA)

Weather forecast for: Grinnell IA

Last Update: 5:46 am CDT Oct 8, 2026

Today: Partly sunny, then gradually becoming sunny, with a high near 74. North wind around 5 mph becoming calm in the morning.

Tonight: A chance of showers, with thunderstorms also possible after 1am. Increasing clouds, with a low around 55. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: A 40 percent chance of showers and thunderstorms, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 80. Southeast wind 6 to 10 mph, with gusts as high as 18 mph. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Clear, with a low around 62. South wind around 9 mph.

Saturday: Sunny, with a high near 80. South wind 10 to 13 mph, with gusts as high as 22 mph.

Saturday Night: Mostly clear, with a low around 58.

Sunday: Sunny, with a high near 78.

Sunday Night: Partly cloudy, with a low around 60.

Columbus Day: Mostly sunny, with a high near 76.

Monday Night: Partly cloudy, with a low around 52.

Tuesday: Mostly sunny, with a high near 63.

Tuesday Night: Partly cloudy, with a low around 46.

Wednesday: A 30 percent chance of showers. Mostly sunny, with a high near 64.