Weather forecast for: Cornell IL
Last Update: 7:07 pm CDT Sep 4, 2026
Tonight: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. West wind around 5 mph becoming calm.
Saturday: Sunny, with a high near 92. Heat index values as high as 102. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Saturday Night: Partly cloudy, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday: Sunny, with a high near 85. East northeast wind around 5 mph, with gusts as high as 15 mph.
Sunday Night: Mostly clear, with a low around 61. East northeast wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Labor Day: Sunny, with a high near 85.
Monday Night: Partly cloudy, with a low around 63.
Tuesday: Mostly sunny, with a high near 92.
Tuesday Night: Partly cloudy, with a low around 74.
Wednesday: Mostly sunny, with a high near 94.
Wednesday Night: A chance of showers. Partly cloudy, with a low around 68.
Thursday: Mostly sunny, with a high near 85.
Thursday Night: Partly cloudy, with a low around 61.
Friday: Mostly sunny, with a high near 85.