Hopatcong Weather Forecast

    • 65
    • 82

    Smoke

    • 65
    • 80

    Rain Showers

    • 55
    • 79

    Mostly Sunny

    • 61
    • 79

    Partly Sunny

    • 66
    • 81

    Rain Showers

    • 60
    • 80

    Chance Thunderstorms

    • 59
    • 77

    Mostly Sunny

Today 17 Jul Sussex

Sunny. Patchy smoke. Near steady temperature in the lower 80s. Northwest Winds around 5 Mph.

Tonight 17 Jul Sussex

Partly cloudy this Evening, then becoming mostly cloudy. Areas of smoke after midnight. Lows in the lower 60s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hopatcong Temperature Statistics

July Temperature

Andover, Aeroflex-Andover Airport (6.2 miles)

  • Lowest 8 July, 2026

    62.1 °F

  • Average July

    75.8 °F

  • Highest 2 July, 2026

    97 °F

Climate (2021–2026)

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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