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.

40°F

4°C

Humidity 93%
Wind Speed Calm
Barometer 30.33 in (1027.6 mb)
Dewpoint 38°F (3°C)
Visibility NA
Last update 3 Apr 4:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Today

    Today: Areas of dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 67. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers before 2am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 56. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 47. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly after 8am. High near 65. West wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Mostly cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

Today
Areas of dense fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 67. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
A slight chance of showers before 2am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 56. Southwest wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 47. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers, mainly after 8am. High near 65. West wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely before 8pm. Mostly cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 33.
Thursday
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:10 am EDT Apr 3, 2026
Forecast Valid:
5am EDT Apr 3, 2026-6pm EDT Apr 9, 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