Upper Montclair Weather Forecast

    • 72
    • 92

    Mostly Sunny

    • 75
    • 97

    Slight Chance Thunderstorms

    • 56
    • 93

    Rain Showers

    • 53
    • 72

    Mostly Cloudy

    • 51
    • 68

    Rain Showers Likely

    • 53
    • 63

    Rain Showers Likely

    • 56
    • 68

    Chance Rain Showers

Today 18 May Western Essex

Sunny. Highs in the lower 90s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 18 May Western Essex

Mostly clear. Lows in the lower 70s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Montclair Temperature Statistics

May Temperature

Caldwell, Essex County Airport (4.3 miles)

  • Lowest 12 May, 2026

    41 °F

  • Average May

    58.5 °F

  • Highest 5 May, 2026

    82.9 °F

Climate (2021–Present)

Caldwell, Essex County Airport (4.3 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    56 °F

  • Average High 2021–2026

    65.2 °F
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