| NWS Forecast for: Lake Forest IL Issued by: National Weather Service Chicago, IL Last Update: 8:56 pm CDT Sep 5, 2026 |  |
| Overnight: Mostly clear, with a steady temperature around 68. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Sunday: Mostly sunny, with a high near 75. East northeast wind 5 to 10 mph. Sunday Night: Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming east southeast after midnight. Winds could gust as high as 10 mph. Labor Day: Sunny, with a high near 76. Southeast wind 5 to 10 mph. Monday Night: Partly cloudy, with a low around 64. South southeast wind 5 to 10 mph. Tuesday: Mostly sunny, with a high near 87. Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Wednesday: Partly sunny, with a high near 88. Wednesday Night: Partly cloudy, with a low around 63. Thursday: Mostly sunny, with a high near 78. Thursday Night: Partly cloudy, with a low around 60. Friday: Mostly sunny, with a high near 80. Friday Night: Partly cloudy, with a low around 62. Saturday: Mostly sunny, with a high near 84. | |
| Lake Forest IL 42.24°N 87.86°W | |
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