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.

63°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 29.87 in (1011.3 mb)
Dewpoint 60°F (16°C)
Visibility NA
Last update 13 Oct 10:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Clear, with a low around 63. West wind around 10 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Northwest wind around 5 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. North wind around 5 mph becoming calm.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 51. 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: 51 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 71. 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 before 8pm. Low around 39. Chance of precipitation is 80%.

    Low: 39 °F

    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 10pm. Otherwise, mostly clear, with a low around 33.

    Low: 33 °F

    Patchy Frost

Detailed Forecast

Tonight
Clear, with a low around 63. West wind around 10 mph.
Wednesday
Mostly sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 51. Northwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 65. North wind around 5 mph becoming calm.
Thursday Night
Showers, mainly after 2am. Low around 51. 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 and possibly a thunderstorm. High near 71. 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 before 8pm. Low around 39. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Patchy frost after 10pm. Otherwise, mostly clear, with a low around 33.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:09 pm EDT Oct 13, 2026
Forecast Valid:
11pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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