Weather forecast for: Caseyville IL
Last Update: 8:46 pm CDT Oct 11, 2026
Tonight: Mostly clear, with a low around 63. Southwest wind around 7 mph.
Columbus Day: Sunny, with a high near 93. Southwest wind 6 to 13 mph.
Monday Night: Mostly clear, with a low around 71. South wind 7 to 10 mph.
Tuesday: Sunny, with a high near 92. Southwest wind 6 to 9 mph.
Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South wind 5 to 8 mph.
Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 83. Chance of precipitation is 90%.
Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Thursday: Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Friday: Partly sunny, with a high near 66. Breezy.
Friday Night: Partly cloudy, with a low around 41.
Saturday: Sunny, with a high near 61.
Saturday Night: Clear, with a low around 38.
Sunday: Sunny, with a high near 68.