High Mountain Park Preserve Weather Forecast

    • 58
    • 81

    Mostly Sunny

    • 57
    • 80

    Increasing Clouds

    • 57
    • 77

    Slight Chance Rain Showers

    • 60
    • 76

    Chance Rain Showers

    • 60
    • 81

    Slight Chance Rain Showers

    • 56
    • 84

    Mostly Sunny

    • 52
    • 73

    Partly Sunny

Today 14 Sep Eastern Passaic

Partly sunny with a 20 percent chance of Showers. Near steady temperature in the lower 80s. Northeast Winds around 5 Mph.

Tonight 14 Sep Eastern Passaic

Partly cloudy in the Evening, then clearing. Lows around 60. East Winds around 5 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

High Mountain Park Preserve Temperature Statistics

September Temperature

Caldwell, Essex County Airport (7.5 miles)

  • Lowest 8 September, 2025

    50 °F

  • Average September

    67.3 °F

  • Highest 5 September, 2025

    84.9 °F

Climate (2020–Present)

Caldwell, Essex County Airport (7.5 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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