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.

34°F

1°C

Humidity 73%
Wind Speed Calm
Barometer 30.33 in (1027.8 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Last update 25 Mar 1:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 52 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 39 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers after 2pm. Partly sunny, with a high near 66. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 8pm. Low around 46. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers, mainly before 8am. High near 47. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 30. Calm wind.
Wednesday
Partly sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 39. South wind around 5 mph.
Thursday
A slight chance of showers after 2pm. Partly sunny, with a high near 66. Southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Showers, mainly after 8pm. Low around 46. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers, mainly before 8am. High near 47. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 55.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 60.
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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:
1:12 am EDT Mar 25, 2026
Forecast Valid:
2am 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