Weather forecast for: Winfield IL
Last Update: 7:36 am CDT Sep 4, 2026
Today: A slight chance of showers and thunderstorms between 10am and noon. Sunny, with a high near 94. Heat index values as high as 104. West wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 73. West wind around 5 mph.
Saturday: Mostly sunny, with a high near 86. Northwest wind 5 to 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph.
Saturday Night: Partly cloudy, with a low around 67. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday: Mostly sunny, with a high near 82. East northeast wind 5 to 10 mph.
Sunday Night: Partly cloudy, with a low around 64.
Labor Day: Mostly sunny, with a high near 82.
Monday Night: Partly cloudy, with a low around 65.
Tuesday: Partly sunny, with a high near 84.
Tuesday Night: A chance of showers after 1am. Partly cloudy, with a low around 71.
Wednesday: Partly sunny, with a high near 88.
Wednesday Night: A chance of showers. Partly cloudy, with a low around 69.
Thursday: Partly sunny, with a high near 82.