| NWS Forecast for: Lake Forest IL Issued by: National Weather Service Chicago, IL Last Update: 8:56 pm CDT Sep 4, 2026 | |
Tonight: A 50 percent chance of showers and thunderstorms, mainly before 3am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 72. North northeast wind around 5 mph becoming calm after midnight. Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 80. North northeast wind 5 to 10 mph, with gusts as high as 15 mph. Saturday Night: Partly cloudy, with a low around 65. East wind 5 to 10 mph, with gusts as high as 15 mph. Sunday: Mostly sunny, with a high near 76. East wind 5 to 10 mph. Sunday Night: Mostly clear, with a low around 63. Northeast wind 5 to 10 mph becoming southeast after midnight. Labor Day: Mostly sunny, with a high near 78. Monday Night: Mostly cloudy, with a low around 65. Tuesday: Partly sunny, with a high near 86. Tuesday Night: A chance of showers after 1am. Partly cloudy, with a low around 71. Wednesday: Partly sunny, with a high near 89. Wednesday Night: Partly cloudy, with a low around 65. Thursday: Mostly sunny, with a high near 79. Thursday Night: Partly cloudy, with a low around 60. Friday: Partly sunny, with a high near 79. | |
| Lake Forest IL 42.24°N 87.86°W | |
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