Hopatcong Weather Forecast

    • 64
    • 90

    Mostly Sunny

    • 64
    • 87

    Chance Thunderstorms

    • 59
    • 85

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 60
    • 85

    Mostly Sunny

    • 66
    • 89

    Slight Chance Rain Showers

Today 5 Jun Sussex

Mostly sunny. Hot with Highs in the upper 80s. West Winds around 5 Mph.

Tonight 5 Jun Sussex

Mostly clear. Lows in the mid 60s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hopatcong Temperature Statistics

June Temperature

Andover, Aeroflex-Andover Airport (6.2 miles)

  • Lowest 2 June, 2026

    45 °F

  • Average June

    62.6 °F

  • Highest 3 June, 2026

    82.9 °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

    63.6 °F
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