Weather forecast for: Highland IL
Last Update: 2:31 am CDT Sep 14, 2026
Overnight: Mostly cloudy, with a low around 62. Northeast wind around 7 mph.
Monday: Mostly sunny, with a high near 87. Southeast wind 9 to 11 mph.
Monday Night: Mostly clear, with a low around 70. Southeast wind 7 to 10 mph.
Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 97. Heat index values as high as 105. Southwest wind 6 to 9 mph.
Tuesday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Light south wind. Chance of precipitation is 60%.
Wednesday: Mostly sunny, with a high near 95.
Wednesday Night: Mostly clear, with a low around 73.
Thursday: Sunny, with a high near 95.
Thursday Night: Partly cloudy, with a low around 71.
Friday: Mostly sunny, with a high near 92.
Friday Night: Partly cloudy, with a low around 70.
Saturday: Mostly sunny, with a high near 91.
Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.