Crystal Lake Weather Forecast

    • 32
    • 49

    Partly Sunny

    • 40
    • 54

    Partly Sunny

    • 47
    • 64

    Slight Chance Rain Showers

    • 47
    • 72

    Chance Rain Showers

    • 41
    • 62

    Chance Rain Showers

    • 40
    • 58

    Chance Rain Showers

Today 1 May McHenry

Mostly cloudy. A slight chance of Showers in the afternoon. Highs in the upper 40s. North Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 1 May McHenry

Partly cloudy. Areas of frost late in the evening. Widespread frost after midnight. Lows in the lower 30s. East Winds around 5 Mph, becoming west after midnight.

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Crystal Lake Temperature Statistics

May Temperature

Chicago / Wheeling, Pal-Waukee Airport (22.4 miles)

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  • Average May

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Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (22.4 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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