Weather forecast for: Knoxville IA
Last Update: 12:01 pm CDT Sep 17, 2026
This Afternoon: Mostly cloudy, with a high near 77. North northwest wind 3 to 6 mph.
Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 66. Light and variable wind becoming east northeast 5 to 7 mph in the evening. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday: A 50 percent chance of showers and thunderstorms, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 82. East wind 9 to 11 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. South southeast wind 7 to 10 mph becoming southwest after midnight. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night: Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 70. Chance of precipitation is 70%.
Sunday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 59. Chance of precipitation is 60%.
Monday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Monday Night: Mostly cloudy, with a low around 56.
Tuesday: Partly sunny, with a high near 63.
Tuesday Night: Partly cloudy, with a low around 52.
Wednesday: Partly sunny, with a high near 68.
WeatherWorld.com
