Lake Hopatcong Weather Forecast

    • 4
    • 18

    Increasing Clouds

    • 10
    • 21

    Mostly Cloudy

    • 11
    • 28

    Mostly Sunny

    • 13
    • 30

    Partly Sunny

    • 12
    • 27

    Chance Snow

    • 6
    • 25

    Slight Chance Snow

Today 31 Jan Morris

Mostly sunny. Cold with Highs around 19. North Winds around 5 Mph.

Tonight 31 Jan Morris

Mostly cloudy. Cold with Lows around 6 above. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 12 below after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Hopatcong Temperature Statistics

January Temperature

Andover, Aeroflex-Andover Airport (7.5 miles)

  • Lowest 21 January, 2026

    -5.1 °F

  • Average January

    26.4 °F

  • Highest 8 January, 2026

    51.1 °F

Climate (2021–Present)

Andover, Aeroflex-Andover Airport (7.5 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

    63.7 °F
Get WillyWeather+ to remove ads