Direct from the National Weather Service

The Lake County IL 7 Day Weather Forecast

Rest Of Today
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Becoming very windy. Cloudy. Patchy fog late in the morning. Rain and snow likely late in the morning, then a chance of snow showers in the afternoon. Little or no new snow accumulation. Highs in the mid 30s around noon, then temperatures rapidly falling during the afternoon. Southwest winds 15 to 25 miles per hour with gusts up to 35 miles per hour late in the morning becoming west and increasing to 25 to 35 miles per hour with gusts up to 45 miles per hour in the afternoon. Chance of precipitation 80 percent.
Tonight
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Windy. Mostly cloudy. Lows 1 to 5 above. Wind chills as low as 10 below to 20 below zero. West winds 20 to 30 miles per hour. Gusts up to 45 miles per hour in the evening decreasing to 35 miles per hour after midnight.
Sunday
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Mostly cloudy. Blustery. Highs 13 to 17. Lowest wind chill readings 10 below to 20 below zero in the morning. Northwest winds 15 to 25 miles per hour. Inland, gusts up to 30 miles per hour in the morning. Near the Lake, gusts up to 35 miles per hour.
Sunday Night
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Mostly cloudy. Lows 8 to 12 above. Northwest winds 10 to 15 miles per hour.
Martin Luther King Jr Day
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Partly sunny. Highs in the lower 20s. Northwest winds 5 to 10 miles per hour.
Monday Night
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Mostly clear. Lows 5 to 9 above.
Tuesday
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Mostly sunny. Highs in the lower 20s.
Tuesday Night
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Mostly clear in the evening then becoming partly cloudy. Lows 13 to 17.
Wednesday And Wednesday Night
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Mostly cloudy. Highs in the mid 30s. Lows in the upper 20s.
Thursday Through Friday
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Cloudy with a 30 percent chance of light rain and light snow. Highs in the upper 30s. Lows in the lower 30s.