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.

25°F

-4°C

Humidity 42%
Wind Speed Vrbl 6 mph
Barometer 29.75 in (1008.7 mb)
Dewpoint 5°F (-15°C)
Visibility NA
Wind Chill18°F (-8°C)
Last update 30 Dec 8:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 30. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 20. Southwest wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 20 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • New Year's Day

    New Year's Day: Mostly cloudy, then gradually becoming sunny, with a high near 25. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 25 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12. West wind around 5 mph.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. West wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a high near 30. Southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 20. Southwest wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
New Year's Day
Mostly cloudy, then gradually becoming sunny, with a high near 25. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 12. West wind around 5 mph.
Friday
Mostly cloudy, with a high near 28.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 30%.
Monday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 33.
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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:
4:12 pm EST Dec 30, 2025
Forecast Valid:
8pm EST Dec 30, 2025-6pm EST Jan 6, 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