| National Weather Service Forecast for:
Grinnell IA Issued by: National Weather Service Des Moines, IA |
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| Updated: 10:07 am CDT Oct 16, 2025 | ||||||||||||||||||
| Grinnell | ||||||||||||||||||
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| Today |
A 20 percent chance of showers before noon. Mostly sunny, with a high near 79. South southeast wind 13 to 15 mph, with gusts as high as 22 mph. |
| Tonight |
Partly cloudy, with a low around 62. South southeast wind around 10 mph, with gusts as high as 18 mph. |
| Friday |
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 81. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
| Friday Night |
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 56. Southwest wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday |
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 75. Light west southwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 20%. |
| Saturday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
| Sunday |
Sunny, with a high near 62. |
| Sunday Night |
Clear, with a low around 43. |
| Monday |
Sunny, with a high near 72. |
| Monday Night |
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 48. |
| Tuesday |
A 30 percent chance of showers. Mostly sunny, with a high near 65. Breezy. |
| Tuesday Night |
Mostly clear, with a low around 39. |
| Wednesday |
Sunny, with a high near 62. |
Forecast from NOAA-NWS for Grinnell IA.