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.

36°F

2°C

Humidity 73%
Wind Speed Calm
Barometer 30.33 in (1027.8 mb)
Dewpoint 28°F (-2°C)
Visibility NA
Last update 24 Mar 11:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 39. South wind around 5 mph.

    Low: 39 °F

    Cloudy

  • Thursday

    Thursday: A slight chance of rain after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 44. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 51. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Calm wind.
Wednesday
Partly sunny, with a high near 51. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Cloudy, with a low around 39. South wind around 5 mph.
Thursday
A slight chance of rain after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Rain, mainly after 2am. Low around 44. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, mainly before 8am. High near 51. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly clear, with a low around 23.
Saturday
Sunny, with a high near 41.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:09 pm EDT Mar 24, 2026
Forecast Valid:
12am EDT Mar 25, 2026-6pm EDT Mar 31, 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