Crystal Lake Weather Forecast

    • 2
    • 14

    Partly Sunny

    • 6
    • 18

    Chance Snow Showers

    • 6
    • 23

    Partly Sunny

    • 16
    • 26

    Chance Snow

    • 15
    • 29

    Mostly Cloudy

    • 16
    • 28

    Chance Snow

Today 29 Jan McHenry

Mostly sunny. Near steady temperature around 12. Northwest Winds around 5 Mph.

Tonight 29 Jan McHenry

Mostly clear in the Evening, then becoming partly cloudy. Lows around 1 above. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

January Temperature

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

  • Lowest 23 January, 2026

    -11.3 °F

  • Average January

    23.6 °F

  • Highest 8 January, 2026

    60.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.4 °F
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