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.

37°F

3°C

Humidity 89%
Wind Speed Calm
Barometer 30.35 in (1028.1 mb)
Dewpoint 34°F (1°C)
Visibility NA
Last update 10 Apr 5:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Today

    Today: Patchy fog before 7am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 67. Southwest wind 5 to 10 mph.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 30%.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 58. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog before 7am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 67. Southwest wind 5 to 10 mph.
Tonight
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 58. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly cloudy, with a high near 71.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 78.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 81.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 78.
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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:
4:10 am EDT Apr 10, 2026
Forecast Valid:
6am EDT Apr 10, 2026-6pm EDT Apr 16, 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