| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 5:57 pm CST Feb 18, 2026 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 32. West northwest wind 6 to 8 mph becoming northeast after midnight. |
| Thursday |
Rain likely, mainly after 5pm. Partly sunny, with a high near 52. Northeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible. |
| Thursday Night |
Rain and snow likely before midnight, then snow. Low around 25. Blustery, with a northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible. |
| Friday |
Partly sunny, with a high near 34. Breezy, with a west northwest wind 11 to 18 mph, with gusts as high as 28 mph. |
| Friday Night |
Partly cloudy, with a low around 18. West northwest wind 6 to 9 mph. |
| Saturday |
Mostly sunny, with a high near 31. |
| Saturday Night |
Partly cloudy, with a low around 14. |
| Sunday |
Mostly sunny, with a high near 27. Blustery. |
| Sunday Night |
Mostly clear, with a low around 10. |
| Monday |
Sunny, with a high near 30. |
| Monday Night |
Partly cloudy, with a low around 18. |
| Tuesday |
Mostly sunny, with a high near 49. Breezy. |
| Tuesday Night |
Mostly cloudy, with a low around 30. |
| Wednesday |
Mostly sunny, with a high near 47. |
Forecast from NOAA-NWS for Grinnell IA.