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City of Grinnell, IowaGrinnell, IA 7-Day Weather Forecast
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Grinnell Weather Forecast
Grinnell, IA Weather Forecast Date: 127 AM CDT Thu Sep 24 2026
Weather forecast for Grinnell, IA
Tonight Lo: 55°F Lo: 13°C |
Tonight... Partly cloudy. Near steady temperature in the mid 50s. East winds around 5 mph. |
Thu Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Thursday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 60s. East winds around 5 mph. |
Fri Hi: 65°FHi: 18°C Lo: 59°F Lo: 15°C |
Friday... Cloudy. Showers likely, mainly in the morning. Highs in the mid 60s. East winds around 5 mph. Chance of rain 70%. |
| Sat Hi: 59°FHi: 15°C Lo: 59°F Lo: 15°C |
Saturday... Showers. Near steady temperature in the upper 50s. Chance of rain 90%. |
Sun Hi: 65°FHi: 18°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy. A slight chance of showers in the morning. Highs in the mid 60s. Chance of rain 20%. |
| Mon Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Monday... Partly sunny. Highs in the upper 60s. |
Tue Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Tuesday... Showers likely in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 70%. |
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