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.

61°F

16°C

Humidity 35%
Wind Speed SW 5 mph
Barometer 29.84 in (1010.8 mb)
Dewpoint 33°F (1°C)
Visibility NA
Last update 11 Nov 3:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: A chance of rain after 2am. Mostly cloudy, with a low around 44. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 54. East wind around 5 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 54 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 37. North wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain

  • Friday

    Friday: Rain likely before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 43 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A chance of rain and snow before 7pm, then a chance of snow after 1am. Mostly cloudy, with a low around 32. Northwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 32 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain after 2am. Mostly cloudy, with a low around 44. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. High near 54. East wind around 5 mph becoming north in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain. Low around 37. North wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain likely before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
A chance of rain and snow before 7pm, then a chance of snow after 1am. Mostly cloudy, with a low around 32. Northwest wind around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.98°N 74.6°W (Elev. 997 ft)
Last Update:
9:33 am EST Nov 11, 2026
Forecast Valid:
4pm EST Nov 11, 2026-6pm EST Nov 18, 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