Passaic River County Park Weather Forecast

    • 58
    • 76

    Chance Thunderstorms

    • 60
    • 70

    Rain Showers Likely

    • 58
    • 79

    Partly Sunny

    • 54
    • 81

    Mostly Sunny

    • 51
    • 73

    Mostly Sunny

    • 53
    • 74

    Partly Sunny

    • 58
    • 78

    Partly Sunny

Today 16 Sep Somerset

Partly sunny this Morning, then mostly cloudy with a slight chance of Showers this afternoon. Highs in the mid 70s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 16 Sep Somerset

Mostly cloudy. A chance of Showers and Thunderstorms after midnight. Lows in the upper 50s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph this evening. Chance of rain 50 percent.

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Passaic River County Park Temperature Statistics

September Temperature

Somerville, Somerset Airport (9.3 miles)

  • Lowest 8 September, 2025

    46.9 °F

  • Average September

    66.6 °F

  • Highest 4 September, 2025

    84.9 °F

Climate (2020–Present)

Somerville, Somerset Airport (9.3 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    65.8 °F
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