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City of Grinnell, IowaGrinnell, IA 7-Day Night Weather Forecast
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Grinnell, IA Weather Forecast
Grinnell, IA Weather Forecast Date: 538 PM CDT Fri Oct 02 2026
The area/counties/county of: Poweshiek, including the city of Grinnell.or toggle through each period.
Tonight... Clear. Lows in the lower 40s. East winds around 5 mph.
Saturday... Sunny. Highs in the upper 60s. South winds 5 to 10 mph.
Saturday Night... Mostly clear. Lows in the upper 40s. Southwest winds around 5 mph.
Sunday... Sunny. Highs in the upper 60s. Northwest winds 5 to 10 mph.
Sunday Night... Clear. Lows in the mid 40s. North winds around 5 mph.
Monday... Sunny. Highs in the mid 60s.
Monday Night... Clear. Lows in the mid 40s.
Tuesday... Sunny. Highs in the upper 60s.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Wednesday... Sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the lower 50s.
Thursday... Mostly sunny. Highs in the lower 70s.
Thursday Night... Mostly clear. Lows in the mid 50s.
POP = Probability of Precipitation
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