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Highland Lake, IL 7-Day Weather Forecast
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Highland Lake Weather Forecast
Highland Lake, IL Weather Forecast Date: 256 PM CDT Mon Aug 31 2026
Weather forecast for Highland Lake, IL
Late Today Hi: 89°FHi: 32°C Lo: 71°F Lo: 22°C |
Late This Afternoon... Partly cloudy. Scattered showers and a slight chance of thunderstorms. Temperatures in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50%. |
| Tue Hi: 89°FHi: 32°C Lo: 75°F Lo: 24°C |
Tuesday... Partly cloudy. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Southwest winds around 5 mph, increasing to 10 to 15 mph in the afternoon. Chance of precipitation 30%. |
Wed Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Wednesday... Partly cloudy in the morning, then becoming mostly sunny. Humid with highs around 90. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 100. |
| Thu Hi: 85°FHi: 29°C Lo: 70°F Lo: 21°C |
Thursday... Mostly cloudy. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 80s. Chance of precipitation 40%. |
Fri Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Friday... Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers in the morning. Highs in the mid 80s. Chance of precipitation 50%. |
| Sat Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Saturday... Partly cloudy. Highs in the lower 80s. |
| Sun Hi: 80°FHi: 27°C Lo: 65°F Lo: 18°C |
Sunday... Partly cloudy. Highs around 80. |
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