National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

34°F

1°C

Humidity 92%
Wind Speed Calm
Barometer 29.64 in (1004.6 mb)
Dewpoint 32°F (0°C)
Visibility NA
Last update 7 Jan 12:54 am EST
Extended Forecast for

Lake Hopatcong NJ

Dense Fog Advisory until January 7, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until January 7, 08:00am

    NOW until 8:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 32 °F

    Rain Likely
    and Fog

  • Wednesday

    Wednesday: A slight chance of rain before 9am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 44. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 44. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely. Cloudy, with a high near 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers. Cloudy, with a low around 41. Chance of precipitation is 40%.

    Low: 41 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers. High near 48. Chance of precipitation is 90%.

    High: 48 °F

    Showers

Detailed Forecast

Overnight
Rain likely, mainly before 2am. Widespread fog. Otherwise, cloudy, with a low around 32. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A slight chance of rain before 9am. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 44. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 44. Northwest wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
Showers likely. Cloudy, with a high near 49. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of showers. Cloudy, with a low around 41. Chance of precipitation is 40%.
Saturday
Showers. High near 48. Chance of precipitation is 90%.
Saturday Night
Showers likely, mainly before 1am. Cloudy, with a low around 36. Chance of precipitation is 70%.
Sunday
A chance of showers before 1pm. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
12:23 am EST Jan 7, 2026
Forecast Valid:
1am EST Jan 7, 2026-6pm EST Jan 13, 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