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.

35°F

2°C

Humidity 59%
Wind Speed NA
Barometer 29.67 in (1005.7 mb)
Dewpoint 22°F (-6°C)
Visibility NA
Last update 23 Feb 4:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Areas of blowing snow. Partly cloudy, with a low around 15. Northwest wind around 15 mph, with gusts as high as 35 mph.

    Low: 15 °F

    Areas Blowing
    Snow

  • Tuesday

    Tuesday: Areas of blowing snow before 2pm. Sunny, with a high near 25. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 25 °F

    Areas Blowing
    Snow

  • Tuesday Night

    Tuesday Night: Snow likely after 1am. Increasing clouds, with a low around 16. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 16 °F

    Partly Cloudy
    then Snow
    Likely

  • Wednesday

    Wednesday: Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 41. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 41 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. West wind around 5 mph.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 37 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.

    Low: 24 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of blowing snow. Partly cloudy, with a low around 15. Northwest wind around 15 mph, with gusts as high as 35 mph.
Tuesday
Areas of blowing snow before 2pm. Sunny, with a high near 25. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Snow likely after 1am. Increasing clouds, with a low around 16. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday
Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 41. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Partly cloudy, with a low around 26. West wind around 5 mph.
Thursday
A slight chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 40.
Friday Night
Mostly clear, with a low around 24.
Saturday
Sunny, with a high near 45.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 39.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
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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:
4:58 pm EST Feb 23, 2026
Forecast Valid:
5pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation