Direct from the National Weather Service

The Lake County IL 7 Day Weather Forecast

Rest Of Tonight
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Clear late in the evening then becoming partly cloudy. Patchy fog late in the evening, then widespread fog after midnight. Temperatures nearly steady in the lower 50s. Northwest winds around 5 miles per hour.
Wednesday
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Partly cloudy. Widespread fog in the morning. Highs in the mid 70s inland. But only in the mid 60s near the lake. Southeast winds 5 to 10 miles per hour.
Wednesday Night
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Partly cloudy. Lows in the lower 50s. Southeast winds 5 to 10 miles per hour.
Thursday
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Mostly sunny. Highs in the lower 80s inland. But only in the lower 70s near the lake. Southeast winds 5 to 10 miles per hour.
Thursday Night
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Mostly clear. Lows in the upper 50s. South winds 5 to 10 miles per hour.
Friday
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Mostly sunny. Highs in the mid 80s.
Friday Night
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Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the lower 60s.
Saturday
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Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the mid 80s.
Saturday Night And Sunday
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Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the lower 60s. Highs in the upper 80s inland. But only in the upper 70s to mid 80s near the lake.
Sunday Night Through Monday Night
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Partly cloudy. Lows in the lower 60s. Highs in the mid 80s inland. But only in the mid to upper 70s near the lake.
Tuesday
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Partly cloudy. Highs around 80 inland. But only in the lower 70s near the lake.