Hopatcong Weather Forecast

    • 61
    • 82

    Increasing Clouds

    • 65
    • 79

    Rain Showers

    • 60
    • 82

    Slight Chance Thunderstorms

    • 60
    • 82

    Mostly Sunny

    • 66
    • 83

    Partly Sunny

    • 60
    • 83

    Chance Rain Showers

Today 15 Aug Sussex

Patchy fog in the morning. Sunny. Highs in the lower 80s. Light and variable Winds.

Tonight 15 Aug Sussex

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Hopatcong Temperature Statistics

August Temperature

Andover, Aeroflex-Andover Airport (6.2 miles)

  • Lowest 4 August, 2026

    57 °F

  • Average August

    74.7 °F

  • Highest 7 August, 2026

    90 °F

Climate (2021–2026)

Andover, Aeroflex-Andover Airport (6.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    63.6 °F
Get WillyWeather+ to remove ads