Upper Montclair Weather Forecast

    • 14
    • 28

    Decreasing Clouds

    • 29
    • 32

    Mostly Cloudy

    • 33
    • 45

    Rain Likely

    • 26
    • 39

    Partly Sunny

    • 24
    • 37

    Chance Snow

    • 21
    • 32

    Slight Chance Snow

Today 8 Dec Western Essex

Mostly sunny this Morning, then becoming mostly cloudy. Cold with Highs in the upper 20s. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 8 Dec Western Essex

Mostly cloudy in the Evening, then clearing. Lows around 13. North Winds around 5 Mph.

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Upper Montclair Temperature Statistics

December Temperature

Caldwell, Essex County Airport (4.3 miles)

  • Lowest 5 December, 2025

    17.1 °F

  • Average December

    32 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Caldwell, Essex County Airport (4.3 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.5 °F
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