Crystal Lake Weather Forecast

    • 72
    • 88

    Increasing Clouds

    • 65
    • 88

    Thunderstorms Likely

    • 61
    • 73

    Chance Thunderstorms

    • 63
    • 78

    Chance Thunderstorms

    • 70
    • 82

    Chance Thunderstorms

    • 64
    • 83

    Chance Thunderstorms

Today 15 Jul McHenry

Mostly sunny. Highs in the upper 80s. South Winds around 5 Mph.

Tonight 15 Jul McHenry

Partly cloudy. Lows in the lower 70s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

July Temperature

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

  • Lowest 10 July, 2025

    62.7 °F

  • Average July

    77.7 °F

  • Highest 5 July, 2025

    93.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    61.5 °F
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