| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 6:51 am CDT Oct 17, 2026 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Today |
Sunny, with a high near 58. South southwest wind 5 to 9 mph. |
| Tonight |
Clear, with a low around 38. South southwest wind 7 to 9 mph. |
| Sunday |
Sunny, with a high near 64. South wind 9 to 14 mph, with gusts as high as 22 mph. |
| Sunday Night |
Clear, with a low around 40. South wind 3 to 8 mph. |
| Monday |
Mostly sunny, with a high near 67. South wind 3 to 6 mph. |
| Monday Night |
Partly cloudy, with a low around 45. |
| Tuesday |
Mostly sunny, with a high near 69. |
| Tuesday Night |
Partly cloudy, with a low around 49. |
| Wednesday |
Mostly sunny, with a high near 74. |
| Wednesday Night |
Partly cloudy, with a low around 52. |
| Thursday |
Sunny, with a high near 77. |
| Thursday Night |
Mostly clear, with a low around 54. |
| Friday |
Mostly sunny, with a high near 78. |
Forecast from NOAA-NWS for Grinnell IA.