Crystal Lake Weather Forecast

    • 23
    • 32

    Increasing Clouds

    • -11
    • 25

    Partly Sunny

    • 11
    • 22

    Partly Sunny

    • 16
    • 33

    Mostly Cloudy

    • 6
    • 27

    Mostly Cloudy

    • 9
    • 19

    Mostly Cloudy

Today 2 Dec Dakota

Partly sunny. Highs in the lower 30s. South Winds 5 to 10 Mph.

Tonight 2 Dec Dakota

Mostly cloudy. A slight chance of freezing rain after midnight. Not as cool with Lows in the lower 20s. Southwest Winds around 5 Mph, becoming northwest 10 to 15 Mph after midnight. Chance of precipitation 20 percent.

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Crystal Lake Temperature Statistics

December Temperature

Sioux City, Sioux Gateway Airport (5 miles)

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  • Average December

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Climate (2020–Present)

Sioux City, Sioux Gateway Airport (5 miles)

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  • Average Low 2020–2025

    39.1 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    62.8 °F
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