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.

26°F

-3°C

Humidity 88%
Wind Speed Calm
Barometer 29.78 in (1009.5 mb)
Dewpoint 23°F (-5°C)
Visibility NA
Last update 14 Mar 5:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Today

    Today: Sunny, with a high near 45. West wind around 15 mph, with gusts as high as 40 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 46. Southeast wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain before 2am, then showers after 2am. Low around 38. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Chance Rain
    then Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 11am. High near 63. South wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers

  • Monday Night

    Monday Night: Rain showers before 5am, then a chance of rain and snow showers. Low around 29. Breezy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 29 °F

    Showers and
    Breezy then
    Rain/Snow

  • Tuesday

    Tuesday: A chance of snow before 8am. Partly sunny, with a high near 36. Chance of precipitation is 30%.

    High: 36 °F

    Chance Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 45. West wind around 15 mph, with gusts as high as 40 mph.
Tonight
Increasing clouds, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 46. Southeast wind 5 to 10 mph, with gusts as high as 25 mph.
Sunday Night
A chance of rain before 2am, then showers after 2am. Low around 38. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, with thunderstorms also possible after 11am. High near 63. South wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 5am, then a chance of rain and snow showers. Low around 29. Breezy. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
A chance of snow before 8am. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Partly sunny, with a high near 45.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 49.
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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:
4:12 am EDT Mar 14, 2026
Forecast Valid:
6am EDT Mar 14, 2026-6pm EDT Mar 20, 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