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.

49°F

9°C

Humidity 55%
Wind Speed N 9 G 21 mph
Barometer 30.27 in (1025.0 mb)
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 11 Apr 8:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Today

    Today: Sunny, with a high near 57. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 34. Northwest wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45. South wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 2pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 57. Northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
Clear, with a low around 34. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 45. South wind around 5 mph.
Monday
A chance of showers after 2pm. Mostly cloudy, with a high near 73. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers, mainly before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 79.
Tuesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 82.
Thursday Night
Mostly cloudy, with a low around 60.
Friday
Partly sunny, with a high near 75.
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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:
4:10 am EDT Apr 11, 2026
Forecast Valid:
9am EDT Apr 11, 2026-6pm EDT Apr 17, 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