Mirror Lake Weather Forecast

    • 12
    • 38

    Gradual Clearing

    • 21
    • 29

    Partly Sunny

    • 22
    • 39

    Mostly Cloudy

    • 17
    • 39

    Mostly Cloudy

    • 9
    • 26

    Partly Sunny

    • 24
    • 32

    Mostly Cloudy

Today 4 Dec Rockland

Partly sunny. Highs in the upper 30s. West Winds 15 to 20 Mph. Gusts up to 30 Mph this afternoon.

Tonight 4 Dec Rockland

Mostly clear. Lows around 14. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming north 5 to 10 Mph with Gusts up to 20 Mph after midnight.

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Mirror Lake Temperature Statistics

December Temperature

Caldwell, Essex County Airport (19.9 miles)

  • Lowest 1 December, 2025

    26.1 °F

  • Average December

    35.7 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Caldwell, Essex County Airport (19.9 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    65.5 °F
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