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Sullivan Lake, IL 7-Day Night Weather Forecast
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Sullivan Lake, IL Weather Forecast
Sullivan Lake, IL Weather Forecast Date: 606 PM CDT Thu Oct 01 2026
The area/counties/county of: Lake County Il, including the cities of: Waukegan, Buffalo Grove, Mundelein, and Gurnee.or toggle through each period.
Tonight... Cloudy. Showers early in the evening, then a chance of showers late in the evening. A slight chance of showers after midnight. Lows around 50. North winds 5 to 10 mph, increasing to 10 to 15 mph after midnight. Chance of precipitation 90%.
Friday... Partly cloudy in the morning, then clearing. Highs in the mid 60s inland, but only around 60 near the lake. North winds 5 to 10 mph.
Friday Night... Mostly clear. Lows in the mid 40s. Northeast winds around 5 mph.
Saturday... Mostly sunny. Highs in the mid 60s. Southeast winds 5 to 10 mph.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Southeast winds around 5 mph, becoming southwest after midnight.
Sunday... Mostly sunny. Highs around 70.
Sunday Night... Mostly clear. Lows in the mid 40s.
Monday... Sunny. Highs in the lower 60s.
Monday Night... Clear. Lows in the lower 40s.
Tuesday... Sunny. Highs in the mid 60s.
Tuesday Night... Mostly clear. Lows in the upper 40s.
Wednesday... Partly cloudy. Highs around 70.
Wednesday Night... Partly cloudy. Lows in the upper 40s.
POP = Probability of Precipitation
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