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.

47°F

8°C

Humidity 59%
Wind Speed W 3 mph
Barometer 29.94 in (1014.1 mb)
Dewpoint 33°F (1°C)
Visibility NA
Last update 19 Apr 5:54 pm EDT
Extended Forecast for

4 Miles NE Lake Hopatcong NJ

Freeze Watch April 21, 12:00am until April 21, 09:00am
Frost Advisory April 20, 02:00am until April 20, 08:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, increasing clouds, with a low around 32. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 30 mph.

    Low: 32 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: A chance of rain and snow showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 46. Northwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. Northwest wind around 5 mph.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 38. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 8am. Partly sunny, with a high near 59. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy frost after 1am. Otherwise, increasing clouds, with a low around 32. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 30 mph.
Monday
A chance of rain and snow showers, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 46. Northwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday Night
Mostly clear, with a low around 26. Northwest wind around 5 mph.
Tuesday
Sunny, with a high near 50. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 38. South wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, mainly before 8am. Partly sunny, with a high near 59. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 67.
Friday Night
A chance of showers. Partly cloudy, with a low around 44. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
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:
4:11 pm EDT Apr 19, 2026
Forecast Valid:
5pm EDT Apr 19, 2026-6pm EDT Apr 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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