Upper Montclair Weather Forecast

    • 62
    • 82

    Becoming Sunny

    • 57
    • 83

    Mostly Sunny

    • 55
    • 73

    Mostly Sunny

    • 57
    • 73

    Partly Sunny

    • 61
    • 77

    Partly Sunny

    • 64
    • 83

    Mostly Cloudy

Today 18 Sep Western Essex

Partly sunny this Morning, then clearing. Patchy fog this morning. Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Western Essex

Mostly clear. Lows in the lower 60s. Northwest Winds around 5 Mph.

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Upper Montclair Temperature Statistics

September Temperature

Caldwell, Essex County Airport (4.3 miles)

  • Lowest 8 September, 2025

    50 °F

  • Average September

    67.7 °F

  • Highest 5 September, 2025

    84.9 °F

Climate (2020–Present)

Caldwell, Essex County Airport (4.3 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    65.6 °F
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