Montclair Weather Forecast

    • 28
    • 40

    Decreasing Clouds

    • 24
    • 40

    Mostly Cloudy

    • 16
    • 29

    Partly Sunny

    • 29
    • 33

    Mostly Cloudy

    • 33
    • 43

    Chance Rain

    • 26
    • 40

    Chance Rain/Snow

Today 6 Dec Western Essex

Mostly cloudy this Morning, then becoming partly sunny. Highs around 40. West Winds around 5 Mph.

Tonight 6 Dec Western Essex

Partly cloudy. Lows in the upper 20s. West Winds around 5 Mph.

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Montclair Temperature Statistics

December Temperature

Caldwell, Essex County Airport (5 miles)

  • Lowest 4 December, 2025

    21.9 °F

  • Average December

    33.9 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Caldwell, Essex County Airport (5 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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