| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 4:21 pm CDT Oct 19, 2025 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Tonight |
Clear, with a low around 42. West wind 5 to 10 mph becoming south after midnight. |
| Monday |
Sunny, with a high near 69. Windy, with a south wind 14 to 22 mph becoming west in the afternoon. Winds could gust as high as 31 mph. |
| Monday Night |
Mostly clear, with a low around 44. West wind 11 to 15 mph, with gusts as high as 28 mph. |
| Tuesday |
Mostly sunny, with a high near 54. Windy, with a west northwest wind 17 to 25 mph, with gusts as high as 37 mph. |
| Tuesday Night |
Mostly clear, with a low around 36. West northwest wind 10 to 14 mph, with gusts as high as 25 mph. |
| Wednesday |
Sunny, with a high near 57. |
| Wednesday Night |
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 32. |
| Thursday |
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 60. |
| Thursday Night |
Mostly clear, with a low around 35. |
| Friday |
Mostly sunny, with a high near 58. |
| Friday Night |
Partly cloudy, with a low around 39. |
| Saturday |
Mostly sunny, with a high near 59. |
| Saturday Night |
Partly cloudy, with a low around 41. |
| Sunday |
Partly sunny, with a high near 62. |
Forecast from NOAA-NWS for Grinnell IA.