| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 10:08 pm CST Feb 3, 2026 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 10. Light north wind. |
| Wednesday |
Mostly sunny, with a high near 28. Wind chill values as low as 5. North northwest wind 5 to 9 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 17. Light and variable wind becoming south southwest 5 to 7 mph after midnight. |
| Thursday |
Mostly sunny, with a high near 43. South southwest wind 7 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 21 mph. |
| Thursday Night |
Mostly clear, with a low around 31. Blustery, with a west wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 29 mph. |
| Friday |
Mostly sunny, with a high near 39. Windy. |
| Friday Night |
Mostly clear, with a low around 18. |
| Saturday |
Mostly sunny, with a high near 38. |
| Saturday Night |
Mostly cloudy, with a low around 26. |
| Sunday |
Mostly sunny, with a high near 39. |
| Sunday Night |
Partly cloudy, with a low around 24. |
| Monday |
Mostly sunny, with a high near 47. |
| Monday Night |
Partly cloudy, with a low around 31. |
| Tuesday |
Partly sunny, with a high near 47. |
Forecast from NOAA-NWS for Grinnell IA.