Upper Montclair Weather Forecast

    • 69
    • 85

    Chance Thunderstorms

    • 67
    • 85

    Mostly Sunny

    • 68
    • 87

    Chance Rain Showers

    • 63
    • 81

    Chance Thunderstorms

    • 64
    • 81

    Mostly Cloudy

    • 64
    • 80

    Mostly Cloudy

Today 17 Aug Western Essex

Mostly cloudy with Showers likely with a slight chance of Thunderstorms in the Morning, then partly sunny with a slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 80s. Northwest Winds around 5 Mph. Chance of rain 70 percent.

Tonight 17 Aug Western Essex

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 60s. Northwest Winds around 5 Mph. Chance of rain 40 percent.

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Upper Montclair Temperature Statistics

August Temperature

Caldwell, Essex County Airport (4.3 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    77.4 °F

  • Highest 7 August, 2026

    91.9 °F

Climate (2021–2026)

Caldwell, Essex County Airport (4.3 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    56 °F

  • Average High 2021–2026

    65.2 °F
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