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 93%
Wind Speed Calm
Barometer 30.22 in (1024.0 mb)
Dewpoint 34°F (1°C)
Visibility NA
Last update 5 Mar 1:54 am EST
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: A chance of rain after 5am. Patchy fog after 3am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain. Patchy fog. High near 40. East wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 40 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain, mainly before 3am. Widespread fog, mainly after 3am. Low around 34. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 34 °F

    Rain and Fog

  • Friday

    Friday: A slight chance of showers before 1pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 40. East wind around 5 mph becoming calm. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Showers and
    Areas Fog

  • Friday Night

    Friday Night: A chance of showers, mainly after 1am. Patchy fog after 1am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, cloudy, with a high near 54.

    High: 54 °F

    Patchy Fog
    then Cloudy

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of rain after 5am. Patchy fog after 3am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. Patchy fog. High near 40. East wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain, mainly before 3am. Widespread fog, mainly after 3am. Low around 34. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A slight chance of showers before 1pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 40. East wind around 5 mph becoming calm. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly after 1am. Patchy fog after 1am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Patchy fog before 10am. Otherwise, cloudy, with a high near 54.
Saturday Night
Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
A chance of showers. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
1:33 am EST Mar 5, 2026
Forecast Valid:
2am EST Mar 5, 2026-6pm EDT Mar 11, 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