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.

27°F

-3°C

Humidity 92%
Wind Speed Calm
Barometer 30.05 in (1018.5 mb)
Dewpoint 25°F (-4°C)
Visibility NA
Last update 17 Feb 11:54 pm EST
Extended Forecast for

4 Miles NE Lake Hopatcong NJ

Dense Fog Advisory until February 18, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 18, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 33 °F

    Dense Fog

  • Wednesday

    Wednesday: Rain. Widespread dense fog, mainly before 11am. High near 41. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Rain and
    Dense Fog

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 7pm. Patchy fog. Otherwise, mostly cloudy, with a low around 32. Calm wind becoming west around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: A slight chance of rain after 1pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 37. Northeast wind around 5 mph. Chance of precipitation is 20%.

    High: 37 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain before 1am, then a chance of snow between 1am and 4am, then a chance of rain and snow after 4am. Cloudy, with a low around 30. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Friday

    Friday: Rain, possibly mixed with snow, becoming all rain after 1pm. High near 37. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 37 °F

    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.

    Low: 31 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, cloudy, with a low around 33. Calm wind.
Wednesday
Rain. Widespread dense fog, mainly before 11am. High near 41. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely, mainly before 7pm. Patchy fog. Otherwise, mostly cloudy, with a low around 32. Calm wind becoming west around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A slight chance of rain after 1pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 37. Northeast wind around 5 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain before 1am, then a chance of snow between 1am and 4am, then a chance of rain and snow after 4am. Cloudy, with a low around 30. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 37. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A chance of rain before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Monday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Lake Hopatcong NJ
 41°N 74.57°W (Elev. 1115 ft)
Last Update:
4:19 pm EST Feb 17, 2026
Forecast Valid:
12am EST Feb 18, 2026-6pm EST Feb 24, 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