Weather forecast for: Collison IL
Last Update: 3:36 pm CDT Sep 5, 2026
This Afternoon: Sunny, with a high near 94. Heat index values as high as 107. North wind around 8 mph.
Tonight: Partly cloudy, with a low around 65. North northeast wind 5 to 10 mph, with gusts as high as 17 mph.
Sunday: Sunny, with a high near 82. East northeast wind 6 to 8 mph.
Sunday Night: Mostly clear, with a low around 59. East northeast wind 3 to 5 mph.
Labor Day: Sunny, with a high near 83. East wind 3 to 6 mph.
Monday Night: Partly cloudy, with a low around 61. East wind 3 to 5 mph.
Tuesday: Sunny, with a high near 90. Calm wind becoming south around 5 mph in the morning.
Tuesday Night: Partly cloudy, with a low around 71.
Wednesday: Mostly sunny, with a high near 93.
Wednesday Night: A 40 percent chance of showers after 1am. Partly cloudy, with a low around 66.
Thursday: A chance of showers. Partly sunny, with a high near 82.
Thursday Night: Partly cloudy, with a low around 59.
Friday: Sunny, with a high near 82.
WeatherWorld.com
