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.

76°F

24°C

Humidity 48%
Wind Speed S 9 G 24 mph
Barometer 29.88 in (1011.2 mb)
Dewpoint 55°F (13°C)
Visibility NA
Heat Index78°F (26°C)
Last update 31 Mar 5:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 62. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 70. West wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 43. North wind around 10 mph becoming east after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers

  • Thursday

    Thursday: A chance of showers. Cloudy, with a high near 46. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Cloudy, with a low around 40. East wind around 5 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain after 2pm. Mostly sunny, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 62. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 70. West wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 43. North wind around 10 mph becoming east after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers. Cloudy, with a high near 46. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 2am. Cloudy, with a low around 40. East wind around 5 mph. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 70.
Friday Night
Mostly cloudy, with a low around 56.
Saturday
A chance of rain after 2pm. Mostly sunny, with a high near 77. Chance of precipitation is 30%.
Saturday Night
A chance of rain before 8pm, then a chance of showers after 8pm. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Sunday
Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:11 pm EDT Mar 31, 2026
Forecast Valid:
6pm EDT Mar 31, 2026-6pm EDT Apr 7, 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