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.

33°F

1°C

Humidity 45%
Wind Speed Calm
Barometer 30.04 in (1018.0 mb)
Dewpoint 14°F (-10°C)
Visibility NA
Last update 13 Mar 12:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Clear, with a low around 24. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 43. South wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 43 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of rain before 2am. Partly cloudy, with a low around 33. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Sunny, with a high near 46. West wind around 15 mph, with gusts as high as 30 mph.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 39. Chance of precipitation is 90%.

    Low: 39 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 61. Chance of precipitation is 100%.

    High: 61 °F

    Rain

  • Monday Night

    Monday Night: Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Rain Likely
    then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
Clear, with a low around 24. Northwest wind around 10 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 43. South wind 5 to 15 mph, with gusts as high as 30 mph.
Friday Night
A slight chance of rain before 2am. Partly cloudy, with a low around 33. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 46. West wind around 15 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Rain, mainly after 2am. Low around 39. Chance of precipitation is 90%.
Monday
Rain. High near 61. Chance of precipitation is 100%.
Monday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 70%.
Tuesday
A chance of rain and snow before 8am. Mostly sunny, with a high near 38. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Sunny, with a high near 36.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 42.
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:
4:11 pm EDT Mar 12, 2026
Forecast Valid:
1am EDT Mar 13, 2026-6pm EDT Mar 19, 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