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.

42°F

6°C

Humidity 33%
Wind Speed Calm
Barometer 29.84 in (1011.2 mb)
Dewpoint 15°F (-9°C)
Visibility NA
Last update 26 Feb 4:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Partly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 42. Calm wind becoming south around 5 mph.

    High: 42 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, sunny, with a high near 49. Southwest wind around 5 mph.

    High: 49 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. Calm wind becoming north around 5 mph after midnight.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow before 1pm. Partly sunny, with a high near 35. Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 26. Chance of precipitation is 40%.

    High: 26 °F

    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 20. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 42. Calm wind becoming south around 5 mph.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 28. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 49. Southwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 27. Calm wind becoming north around 5 mph after midnight.
Sunday
A slight chance of snow before 1pm. Partly sunny, with a high near 35. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 13.
Monday
A chance of snow. Mostly cloudy, with a high near 26. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
A chance of snow. Cloudy, with a low around 26. Chance of precipitation is 50%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
4:11 pm EST Feb 26, 2026
Forecast Valid:
5pm EST Feb 26, 2026-6pm EST Mar 5, 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