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.

28°F

-2°C

Humidity 69%
Wind Speed SW 8 G 18 mph
Barometer 29.66 in (1005.5 mb)
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill20°F (-7°C)
Last update 31 Dec 9:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Snow showers. The snow could be heavy at times. Low around 19. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

    Low: 19 °F

    Heavy Snow

  • New Year's Day

    New Year's Day: Snow showers likely, mainly before 8am. The snow could be heavy at times. Cloudy through mid morning, then gradual clearing, with a high near 24. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Heavy Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 13. West wind around 5 mph.

    Low: 13 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 26. West wind 5 to 10 mph.

    High: 26 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 16. West wind around 5 mph.

    Low: 16 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow showers. The snow could be heavy at times. Low around 19. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.
New Year's Day
Snow showers likely, mainly before 8am. The snow could be heavy at times. Cloudy through mid morning, then gradual clearing, with a high near 24. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 13. West wind around 5 mph.
Friday
Mostly sunny, with a high near 26. West wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 16. West wind around 5 mph.
Saturday
Partly sunny, with a high near 30.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 15.
Monday
Partly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
A chance of rain. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
7:15 pm EST Dec 31, 2025
Forecast Valid:
10pm EST Dec 31, 2025-6pm EST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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