National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Coastal and Marine Hazards This Week

Coastal flooding, dangerous rip currents, high surf, and hazardous marine conditions are expected through this week. View this briefing for more details. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

49°F

9°C

Humidity 97%
Wind Speed Calm
Barometer 30.29 in (1025.8 mb)
Dewpoint 48°F (9°C)
Visibility NA
Last update 24 Sep 10:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 68. North wind around 10 mph, with gusts as high as 30 mph.

    High: 68 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 53. North wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 53. North wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers before 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.

    High: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 68. North wind around 10 mph, with gusts as high as 30 mph.
Friday Night
A slight chance of showers before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 53. North wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Saturday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely. Cloudy, with a low around 53. North wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Monday
A chance of showers before 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 74.
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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:
7:57 pm EDT Sep 24, 2026
Forecast Valid:
11pm EDT Sep 24, 2026-6pm EDT Oct 1, 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