National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

62°F

17°C

Humidity 93%
Wind Speed Calm
Barometer 29.84 in (1009.8 mb)
Dewpoint 60°F (16°C)
Visibility NA
Last update 14 Oct 3:54 am EDT
Extended Forecast for

Hopatcong NJ

  • Today

    Today: Increasing clouds, with a high near 77. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 65. North wind around 5 mph becoming calm in the afternoon.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers after 2am. Low around 49. Calm wind becoming southeast around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Partly Cloudy
    then Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 71. South wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost. Otherwise, mostly clear, with a low around 32.

    Low: 32 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Areas Frost
    then Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 77. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 49. North wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 65. North wind around 5 mph becoming calm in the afternoon.
Thursday Night
Showers after 2am. Low around 49. Calm wind becoming southeast around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers, with thunderstorms also possible after 5pm. High near 71. South wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 39. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Areas of frost. Otherwise, mostly clear, with a low around 32.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hopatcong NJ
 40.95°N 74.67°W (Elev. 1096 ft)
Last Update:
4:09 am EDT Oct 14, 2026
Forecast Valid:
4am EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation