Weather forecast for: Knoxville IA
Last Update: 7:51 pm CDT Sep 17, 2026
Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 66. East wind around 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday: A 40 percent chance of showers and thunderstorms, mainly before 10am. Patchy fog before 10am. Otherwise, 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, mainly 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. North wind 5 to 7 mph. 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%. New rainfall amounts between a quarter and half of an inch possible.
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. Cloudy, with a high near 62. Chance of precipitation is 60%.
Monday Night: Mostly cloudy, with a low around 56.
Tuesday: Mostly cloudy, with a high near 61.
Tuesday Night: Partly cloudy, with a low around 52.
Wednesday: Partly sunny, with a high near 66.
Wednesday Night: Partly cloudy, with a low around 57.
Thursday: A 30 percent chance of showers. Partly sunny, with a high near 69.
WeatherWorld.com
