Upper Greenwood Lake Weather Forecast

    • 59
    • 76

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 70
    • 86

    Mostly Sunny

    • 71
    • 91

    Slight Chance Thunderstorms

    • 69
    • 85

    Chance Thunderstorms

    • 68
    • 81

    Chance Thunderstorms

Today 22 Jul Western Passaic

Mostly sunny. Highs in the upper 70s. Northeast Winds around 5 Mph in the Morning, becoming light and variable.

Tonight 22 Jul Western Passaic

Mostly clear. Lows in the upper 50s. North Winds around 5 Mph.

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Upper Greenwood Lake Temperature Statistics

July Temperature

Sussex, Sussex Airport (12.4 miles)

  • Lowest 5 July, 2025

    54 °F

  • Average July

    77.8 °F

  • Highest 16 July, 2025

    92.6 °F

Climate (2020–Present)

Sussex, Sussex Airport (12.4 miles)

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  • Average Low 2020–2025

    42.3 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.3 °F
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