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.

26°F

-3°C

Humidity 75%
Wind Speed Vrbl 6 mph
Barometer 30.09 in (1020.6 mb)
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 27 Dec 12:54 pm EST
Extended Forecast for

Lake Hopatcong NJ

  • This Afternoon

    This Afternoon: Cloudy, then gradually becoming mostly sunny, with a high near 27. North wind around 5 mph becoming calm.

    High: 27 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 36. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.

    High: 36 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Freezing rain before 10pm, then rain. Low around 31. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible.

    Low: 31 °F

    Rain/Freezing
    Rain then
    Rain

  • Monday

    Monday: Rain, mainly before 1pm. High near 50. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Cloudy, then gradually becoming mostly sunny, with a high near 27. North wind around 5 mph becoming calm.
Tonight
Partly cloudy, with a low around 16. Calm wind.
Sunday
A slight chance of rain and snow between 1pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 36. Calm wind becoming southwest around 5 mph. Chance of precipitation is 20%.
Sunday Night
Freezing rain before 10pm, then rain. Low around 31. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible.
Monday
Rain, mainly before 1pm. High near 50. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly cloudy, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 20.
New Year's Day
A chance of snow. Partly sunny, with a high near 30. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:11 am EST Dec 27, 2025
Forecast Valid:
1pm EST Dec 27, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation