Weather forecast for: Grimes IA
Last Update: 9:17 pm CDT Sep 14, 2026
Tonight: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 67. Breezy, with a south wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between 2 and 3 inches possible.
Tuesday: Showers and possibly a thunderstorm before noon, then a slight chance of showers between noon and 1pm. High near 71. North wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night: A chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 60. Northeast wind 3 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 73. East wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night: Showers and possibly a thunderstorm. Low around 64. East wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday: Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67.
Friday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Friday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday: A 50 percent chance of showers. Mostly sunny, with a high near 80.
Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 63.
Sunday: A 30 percent chance of showers. Partly sunny, with a high near 73.
Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 59.
Monday: Partly sunny, with a high near 71.
WeatherWorld.com
