| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 4:51 pm CST Mar 1, 2026 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Tonight |
A 20 percent chance of snow before 9pm. Partly cloudy, with a low around 24. East wind 6 to 8 mph. |
| Monday |
Partly sunny, with a high near 43. Southeast wind 7 to 9 mph. |
| Monday Night |
A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 33. Southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible. |
| Tuesday |
Rain likely, mainly before noon. Mostly cloudy, with a high near 45. East wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible. |
| Tuesday Night |
A chance of rain before 9pm, then a chance of rain and thunderstorms between 9pm and midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 37. East northeast wind around 7 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible. |
| Wednesday |
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 50. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
| Wednesday Night |
A 40 percent chance of rain. Mostly cloudy, with a low around 37. |
| Thursday |
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 58. |
| Thursday Night |
Rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. |
| Friday |
Rain. High near 62. Breezy. Chance of precipitation is 80%. |
| Friday Night |
A 40 percent chance of rain. Mostly cloudy, with a low around 30. |
| Saturday |
Mostly sunny, with a high near 52. |
| Saturday Night |
Mostly clear, with a low around 32. |
| Sunday |
Sunny, with a high near 59. |
Forecast from NOAA-NWS for Grinnell IA.