Hopatcong Weather Forecast

    • 49
    • 68

    Increasing Clouds

    • 54
    • 61

    Chance Rain Showers

    • 41
    • 65

    Mostly Sunny

    • 41
    • 61

    Sunny

    • 46
    • 64

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

Today 3 Oct Sussex

Sunny. Highs in the upper 60s.

Tonight 3 Oct Sussex

Mostly clear. Lows in the upper 40s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hopatcong Temperature Statistics

October Temperature

Andover, Aeroflex-Andover Airport (6.2 miles)

  • Lowest 1 October, 2026

    60.1 °F

  • Average October

    65.6 °F

  • Highest 1 October, 2026

    73.9 °F

Climate (2021–2026)

Andover, Aeroflex-Andover Airport (6.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.5 °F
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