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 45%
Wind Speed Vrbl 5 mph
Barometer 30.06 in (1018.8 mb)
Dewpoint 12°F (-11°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 13 Mar 2:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Clear, with a low around 24. Northwest wind around 5 mph.

    Low: 24 °F

    Clear

  • Friday

    Friday: A slight chance of snow between 2pm and 3pm. Increasing clouds, with a high near 42. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 42 °F

    Sunny then
    Slight Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow, possibly mixing with rain after 10pm, then gradually ending. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 47 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. Northwest wind around 5 mph becoming calm after midnight.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 38. Chance of precipitation is 90%.

    Low: 38 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 63. Chance of precipitation is 100%.

    High: 63 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 32. Chance of precipitation is 80%.

    Low: 32 °F

    Showers

Detailed Forecast

Overnight
Clear, with a low around 24. Northwest wind around 5 mph.
Friday
A slight chance of snow between 2pm and 3pm. Increasing clouds, with a high near 42. Light southwest wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Friday Night
A chance of snow, possibly mixing with rain after 10pm, then gradually ending. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. South wind around 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
Sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 29. Northwest wind around 5 mph becoming calm after midnight.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Showers, mainly after 2am. Low around 38. Chance of precipitation is 90%.
Monday
Showers, with thunderstorms also possible after 2pm. High near 63. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm. Low around 32. Chance of precipitation is 80%.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 40. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly cloudy, with a high near 44.
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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:
2:24 am EDT Mar 13, 2026
Forecast Valid:
3am EDT Mar 13, 2026-6pm EDT Mar 19, 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