Weather forecast for: Plano IL
Last Update: 8:01 pm CDT Sep 3, 2026
Tonight: Mostly clear, with a low around 72. Calm wind becoming south southeast around 5 mph in the evening.
Friday: Sunny, with a high near 92. Heat index values as high as 102. South southeast wind 5 to 10 mph becoming west southwest in the morning.
Friday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 71. Southwest wind around 5 mph becoming northeast after midnight. Chance of precipitation is 50%.
Saturday: Mostly sunny, with a high near 88. Heat index values as high as 96. Northeast wind 5 to 10 mph.
Saturday Night: Partly cloudy, with a low around 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday: Mostly sunny, with a high near 83.
Sunday Night: Partly cloudy, with a low around 61.
Labor Day: Mostly sunny, with a high near 83.
Monday Night: Partly cloudy, with a low around 63.
Tuesday: Mostly sunny, with a high near 88.
Tuesday Night: A chance of showers. Partly cloudy, with a low around 71.
Wednesday: Mostly sunny, with a high near 89.
Wednesday Night: A chance of showers. Partly cloudy, with a low around 69.
Thursday: Mostly sunny, with a high near 85.