Weather Forecast for
Saint Clair County, IL

Overnight: Mostly cloudy, with a low around 62. Calm wind.

Wednesday: Mostly sunny, with a high near 83. South wind 3 to 6 mph.

Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Thursday: A slight chance of showers before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 85. Light south wind. Chance of precipitation is 60%.

Thursday Night: Showers and possibly a thunderstorm. Low around 68. Light east wind. Chance of precipitation is 90%.

Friday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. High near 83. Chance of precipitation is 80%.

Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.

Sunday: Mostly sunny, with a high near 95.

Sunday Night: Mostly clear, with a low around 75.

Monday: Sunny, with a high near 96.

Monday Night: Clear, with a low around 76.

Tuesday: Sunny and hot, with a high near 97.

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