Day A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 89. Light south wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 40%.
Night A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 69. Light and variable wind.
Includes the Counties: Madison County Il,
Saint Clair County Il,
Monroe County Il,
Saint Charles County Mo,
Saint Louis County Mo,
Saint Louis City County Mo,
Jefferson County Mo,
Including The Cities Of Alton, Edwardsville, Belleville, Cahokia,
Saint Charles, And Saint Louis