Upper Greenwood Lake Weather Forecast

    • 63
    • 78

    Chance Rain Showers

    • 52
    • 75

    Mostly Sunny

    • 55
    • 67

    Rain Showers

    • 53
    • 64

    Rain Showers

    • 50
    • 62

    Chance Rain Showers

    • 48
    • 61

    Chance Rain Showers

Today 17 Sep Western Passaic

Partly sunny this Morning, then becoming mostly cloudy. Highs in the upper 70s. South Winds around 5 Mph.

Tonight 17 Sep Western Passaic

Mostly cloudy. A chance of Showers, mainly in the evening. Humid with Lows in the mid 60s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of rain 30 percent.

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  • Temperature Real-Time

Upper Greenwood Lake Temperature Statistics

September Temperature

Sussex, Sussex Airport (12.4 miles)

  • Lowest 1 September, 2026

    68 °F

  • Average September

    70.1 °F

  • Highest 1 September, 2026

    73 °F

Climate (2021–2026)

Sussex, Sussex Airport (12.4 miles)

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  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63.2 °F
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