Weather forecast for: Chapin IL
Last Update: 6:36 am CDT Sep 6, 2026
Today: Mostly sunny, with a high near 87. East northeast wind 6 to 10 mph.
Tonight: Partly cloudy, with a low around 62. East wind 5 to 8 mph, with gusts as high as 15 mph.
Labor Day: Sunny, with a high near 86. East southeast wind 6 to 8 mph.
Monday Night: Mostly clear, with a low around 63. East southeast wind around 6 mph.
Tuesday: Sunny, with a high near 93. South wind 5 to 9 mph, with gusts as high as 15 mph.
Tuesday Night: Mostly clear, with a low around 72. South wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday: Mostly sunny, with a high near 93. South southwest wind 7 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 83.
Thursday Night: Mostly clear, with a low around 60.
Friday: Sunny, with a high near 84.
Friday Night: Mostly clear, with a low around 62.
Saturday: Sunny, with a high near 89.