Hopatcong Weather Forecast

    • 48
    • 65

    Decreasing Clouds

    • 60
    • 77

    Mostly Sunny

    • 61
    • 83

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 68
    • 90

    Mostly Sunny

    • 59
    • 88

    Chance Rain Showers

Today 15 May Sussex

Partly sunny this Morning, then becoming mostly cloudy. Highs in the mid 60s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 15 May Sussex

Partly cloudy in the Evening, then clearing. Lows in the upper 40s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hopatcong Temperature Statistics

May Temperature

Andover, Aeroflex-Andover Airport (6.2 miles)

  • Lowest 1 May, 2026

    36 °F

  • Average May

    54.5 °F

  • Highest 5 May, 2026

    82 °F

Climate (2021–Present)

Andover, Aeroflex-Andover Airport (6.2 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    63.7 °F
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