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.

75°F

24°C

Humidity 58%
Wind Speed Calm
Barometer 30.06 in (1017.3 mb)
Dewpoint 59°F (15°C)
Visibility NA
Last update 25 May 6:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph.

    Low: 53 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 61. Southwest wind around 5 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.

    High: 83 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 59. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph.
Tuesday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 61. Southwest wind around 5 mph.
Wednesday
Partly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 59. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
4:08 pm EDT May 25, 2026
Forecast Valid:
7pm EDT May 25, 2026-6pm EDT Jun 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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