Passaic River Park Weather Forecast

    • 53
    • 69

    Rain Likely

    • 51
    • 63

    Rain Likely

    • 49
    • 64

    Slight Chance Rain

    • 49
    • 64

    Mostly Cloudy

    • 50
    • 65

    Chance Rain Showers

    • 51
    • 68

    Chance Rain Showers

Today 21 Sep Morris

Partly sunny in the Morning, then becoming mostly cloudy. Highs in the upper 60s. Northeast Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 21 Sep Morris

Cloudy. A chance of Showers in the Evening, then Showers likely after midnight. Lows around 50. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

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Passaic River Park Temperature Statistics

September Temperature

Morristown Municipal (7.5 miles)

  • Lowest 15 September, 2026

    48.2 °F

  • Average September

    67.6 °F

  • Highest 3 September, 2026

    87.8 °F

Climate (2021–2026)

Morristown Municipal (7.5 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    63.9 °F
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