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.

31°F

-1°C

Humidity 85%
Wind Speed Calm
Barometer 30.04 in (1017.9 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Last update 1 Mar 2:54 am EST
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. North wind around 10 mph.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow showers, possibly mixed with sleet before 2pm, then a slight chance of snow showers between 2pm and 3pm. High near 34. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.

    High: 34 °F

    Snow/Sleet
    then Snow
    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 11. North wind around 5 mph.

    Low: 11 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 30. North wind around 5 mph becoming calm.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 16. Calm wind.

    Low: 16 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow before 1pm, then rain, possibly mixed with snow. High near 39. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 39 °F

    Chance Snow
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 34. Chance of precipitation is 90%.

    Low: 34 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Cloudy, with a low around 36. Chance of precipitation is 50%.

    Low: 36 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. North wind around 10 mph.
Sunday
Snow showers, possibly mixed with sleet before 2pm, then a slight chance of snow showers between 2pm and 3pm. High near 34. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.
Sunday Night
Mostly clear, with a low around 11. North wind around 5 mph.
Monday
Sunny, with a high near 30. North wind around 5 mph becoming calm.
Monday Night
Mostly clear, with a low around 16. Calm wind.
Tuesday
A chance of snow before 1pm, then rain, possibly mixed with snow. High near 39. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 34. Chance of precipitation is 90%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 49. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Cloudy, with a low around 36. Chance of precipitation is 50%.
Thursday
A chance of rain. Cloudy, with a high near 55. Chance of precipitation is 50%.
Thursday Night
Rain likely. Cloudy, with a low around 42. Chance of precipitation is 60%.
Friday
A chance of rain. Mostly cloudy, with a high near 56. Chance of precipitation is 40%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 42. Chance of precipitation is 30%.
Saturday
A chance of rain. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:10 pm EST Feb 28, 2026
Forecast Valid:
3am EST Mar 1, 2026-6pm EST Mar 7, 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