Weather forecast for: Lancaster IL
Last Update: 6:21 pm CDT Sep 3, 2026
Tonight: Clear, with a low around 75. Light south southwest wind.
Friday: Sunny and hot, with a high near 100. Heat index values as high as 105. Calm wind becoming west around 5 mph in the afternoon.
Friday Night: Mostly clear, with a low around 76. Calm wind.
Saturday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 71. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 10%.
Sunday: Sunny, with a high near 92. East northeast wind 6 to 11 mph.
Sunday Night: Mostly clear, with a low around 65. East northeast wind 6 to 13 mph.
Labor Day: Sunny, with a high near 91. East northeast wind 5 to 7 mph.
Monday Night: Mostly clear, with a low around 67. East northeast wind 3 to 6 mph.
Tuesday: Sunny, with a high near 96. South wind 3 to 8 mph.
Tuesday Night: Mostly clear, with a low around 74. South southeast wind 6 to 8 mph.
Wednesday: Sunny and hot, with a high near 99. Southwest wind 9 to 11 mph.
Wednesday Night: A slight chance of showers. Mostly clear, with a low around 75. South wind around 10 mph.
Thursday: A chance of showers. Mostly sunny, with a high near 95. West wind 8 to 13 mph.
WeatherWorld.com
