Crystal Lake Weather Forecast

    • 19
    • 25

    Mostly Sunny

    • 28
    • 53

    Mostly Sunny

    • 30
    • 58

    Partly Sunny

    • 29
    • 54

    Partly Sunny

    • 21
    • 43

    Partly Sunny

    • 34
    • 51

    Partly Sunny

    • 25
    • 54

    Mostly Cloudy

Today 14 Dec Adams

Sunny. South Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 14 Dec Adams

Clear. Lows around 20. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crystal Lake Temperature Statistics

December Temperature

Hastings, Hastings Municipal Airport (9.9 miles)

  • Lowest 4 December, 2025

    12.9 °F

  • Average December

    31.6 °F

  • Highest 9 December, 2025

    62.1 °F

Climate (2020–Present)

Hastings, Hastings Municipal Airport (9.9 miles)

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  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    64.7 °F
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