Upper Greenwood Lake Weather Forecast

    • 56
    • 78

    Partly Sunny

    • 55
    • 77

    Partly Sunny

    • 55
    • 75

    Partly Sunny

    • 58
    • 73

    Chance Rain Showers

    • 58
    • 79

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

    • 49
    • 70

    Partly Sunny

Today 14 Sep Western Passaic

Partly sunny with a 20 percent chance of Showers. Near steady temperature in the upper 70s. North Winds around 5 Mph.

Tonight 14 Sep Western Passaic

Partly cloudy in the Evening, then clearing. Patchy fog after midnight. Lows in the upper 50s. Light and variable Winds, becoming north around 5 Mph after midnight.

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Upper Greenwood Lake Temperature Statistics

September Temperature

Sussex, Sussex Airport (12.4 miles)

  • Lowest 8 September, 2025

    43 °F

  • Average September

    63.6 °F

  • Highest 4 September, 2025

    82 °F

Climate (2020–Present)

Sussex, Sussex Airport (12.4 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.3 °F
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