Grayslake Weather Forecast

    • 30
    • 34

    Wintry Mix Likely

    • 34
    • 50

    Slight Chance Rain

    • 24
    • 41

    Mostly Cloudy

    • 26
    • 32

    Cloudy

    • 29
    • 38

    Chance Rain

    • 16
    • 34

    Partly Sunny

Today 1 Feb Lake

Mostly cloudy. Highs in the mid 30s. East Winds around 10 Mph in the Morning, becoming southeast in the afternoon. Gusts up to 20 Mph.

Tonight 1 Feb Lake

Cloudy. Light Snow, rain likely with a slight chance of freezing rain after midnight. Patchy fog after midnight. Snow accumulation up to half an inch. Lows around 30. Southeast Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

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Grayslake Temperature Statistics

February Temperature

Chicago/Waukegan Regional Airport (10.6 miles)

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  • Average February

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Climate (2020–Present)

Chicago/Waukegan Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    59.3 °F
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