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 S 10 G 20 mph
Barometer 30.34 in (1027.7 mb)
Dewpoint 33°F (1°C)
Visibility NA
Last update 12 Apr 3:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers, mainly between 3pm and 5pm. Mostly cloudy, with a high near 74. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. West wind around 5 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 61. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A chance of showers, mainly between 3pm and 5pm. Mostly cloudy, with a high near 74. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 57. West wind around 5 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 80. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 61. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 62.
Thursday
Partly sunny, with a high near 84.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 55.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
4:11 pm EDT Apr 12, 2026
Forecast Valid:
4pm EDT Apr 12, 2026-6pm EDT Apr 19, 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