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Transitioning to a New Format for the Area Forecast Discussion on January 6, 2026

Hazardous Weather Conditions

Dense Fog Advisory in effect from January 7, 12:12 AM EST until January 7, 08:00 AM EST

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

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles NE 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
High: 42 °F
Chance Rain
and Areas Fog
then Partly
Sunny
Wednesday Night
Low: 31 °F
Mostly Cloudy
Thursday
High: 43 °F
Mostly Sunny
Thursday Night
Low: 31 °F
Mostly Cloudy
Friday
High: 48 °F
Showers
Likely
Friday Night
Low: 41 °F
Chance
Showers
Saturday
High: 48 °F
Showers

Detailed Forecast

Overnight

Rain likely, mainly before 3am. 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 chance of rain, mainly before 7am. Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 42. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night

Mostly cloudy, with a low around 31. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 43. Northwest wind around 5 mph becoming calm in the afternoon.

Thursday Night

Mostly cloudy, with a low around 31. Calm wind.

Friday

Showers likely. Cloudy, with a high near 48. 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 80%.

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 41. Chance of precipitation is 30%.

Sunday Night

Partly cloudy, with a low around 26.

Monday

Mostly sunny, with a high near 36.