Lake Hopatcong Weather Forecast

    • 19
    • 29

    Decreasing Clouds

    • 22
    • 40

    Partly Sunny

    • 39
    • 44

    Rain

    • 24
    • 52

    Rain Likely

    • 29
    • 36

    Mostly Cloudy

    • 24
    • 41

    Partly Sunny

    • 22
    • 34

    Mostly Cloudy

Today 16 Dec Morris

Mostly sunny and cold. Near steady temperature in the upper 20s. Southwest Winds around 5 Mph.

Tonight 16 Dec Morris

Partly cloudy this Evening, then clearing. Cold with Lows around 19. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Hopatcong Temperature Statistics

December Temperature

Andover, Aeroflex-Andover Airport (7.5 miles)

  • Lowest 9 December, 2025

    6.1 °F

  • Average December

    27.2 °F

  • Highest 1 December, 2025

    41 °F

Climate (2020–Present)

Andover, Aeroflex-Andover Airport (7.5 miles)

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  • Average Low 2020–2025

    43.9 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    63.7 °F
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