| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 1:26 pm CDT Mar 21, 2026 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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Hazardous Weather Outlook
Special Weather Statement
| This Afternoon |
Sunny, with a high near 85. Southwest wind around 15 mph, with gusts as high as 24 mph. |
| Tonight |
Increasing clouds, with a low around 47. Southwest wind 8 to 14 mph becoming north northwest after midnight. Winds could gust as high as 23 mph. |
| Sunday |
A chance of sprinkles between 10am and 11am. Partly sunny, with a steady temperature around 52. Windy, with a north wind around 22 mph, with gusts as high as 32 mph. |
| Sunday Night |
Mostly clear, with a low around 29. North wind 5 to 15 mph, with gusts as high as 24 mph. |
| Monday |
Mostly sunny, with a high near 52. Light and variable wind. |
| Monday Night |
Mostly cloudy, with a low around 36. |
| Tuesday |
Partly sunny, with a high near 60. |
| Tuesday Night |
Mostly cloudy, with a low around 42. |
| Wednesday |
Mostly cloudy, with a high near 66. |
| Wednesday Night |
Partly cloudy, with a low around 47. |
| Thursday |
Mostly sunny, with a high near 64. Breezy. |
| Thursday Night |
Partly cloudy, with a low around 33. Breezy. |
| Friday |
Partly sunny, with a high near 49. |
Forecast from NOAA-NWS for Grinnell IA.