Weather forecast for: Chestnut IL
Last Update: 5:46 pm CDT Sep 4, 2026
Tonight: Mostly clear, with a low around 73. West southwest wind around 5 mph becoming calm in the evening.
Saturday: Sunny and hot, with a high near 97. Heat index values as high as 104. Calm wind becoming north 5 to 9 mph in the morning.
Saturday Night: Partly cloudy, with a low around 68. Northeast wind 7 to 11 mph, with gusts as high as 16 mph.
Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 87. East northeast wind 8 to 11 mph, with gusts as high as 15 mph.
Sunday Night: Mostly clear, with a low around 63. East wind 6 to 11 mph, with gusts as high as 15 mph.
Labor Day: Sunny, with a high near 87. East wind 6 to 9 mph.
Monday Night: Mostly clear, with a low around 64. East wind 7 to 10 mph, with gusts as high as 15 mph.
Tuesday: Sunny, with a high near 94.
Tuesday Night: Mostly clear, with a low around 73.
Wednesday: Mostly sunny and hot, with a high near 97.
Wednesday Night: A chance of showers. Partly cloudy, with a low around 69.
Thursday: Mostly sunny, with a high near 89.
Thursday Night: Partly cloudy, with a low around 62.
Friday: Mostly sunny, with a high near 88.