Weather forecast for: East St. Louis IL
Last Update: 6:46 am CDT Aug 6, 2026
Today: Showers and thunderstorms, mainly before 2pm. Some of the storms could produce heavy rainfall. High near 81. Southwest wind 6 to 9 mph becoming south in the afternoon. Chance of precipitation is 100%.
Tonight: Scattered showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 72. Light southeast wind. Chance of precipitation is 50%.
Friday: Scattered showers and thunderstorms, mainly between 4pm and 5pm. Partly sunny, with a high near 90. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Friday Night: A 50 percent chance of showers and thunderstorms, mainly between 7pm and 1am. Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph.
Saturday: Mostly sunny, with a high near 92. Light west wind.
Saturday Night: Mostly clear, with a low around 74.
Sunday: Mostly sunny, with a high near 94.
Sunday Night: Mostly clear, with a low around 76.
Monday: Sunny, with a high near 96.
Monday Night: Mostly clear, with a low around 78.
Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Tuesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.