Weather forecast for: Sumner IL
Last Update: 2:06 am CDT Sep 8, 2026
Overnight: Mostly clear, with a low around 61. Light northeast wind.
Tuesday: Mostly sunny, with a high near 94. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night: Mostly clear, with a low around 73. South wind 5 to 9 mph, with gusts as high as 17 mph.
Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 102. West southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday Night: Showers and thunderstorms, mainly before 1am, then showers and possibly a thunderstorm after 1am. Low around 70. Southwest wind 3 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Thursday: Showers, mainly before 1pm. High near 82. Light and variable wind becoming west northwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night: Mostly cloudy, with a low around 62. Light north northeast wind.
Friday: Mostly sunny, with a high near 86.
Friday Night: Partly cloudy, with a low around 65.
Saturday: Mostly sunny, with a high near 90.
Saturday Night: Partly cloudy, with a low around 67.
Sunday: Mostly sunny, with a high near 90.
Sunday Night: Partly cloudy, with a low around 66.
Monday: Sunny, with a high near 89.
WeatherWorld.com
