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.

45°F

7°C

Humidity 90%
Wind Speed Calm
Barometer 30.07 in (1018.4 mb)
Dewpoint 42°F (6°C)
Visibility NA
Last update 16 May 3:54 am EDT
Extended Forecast for

Hopatcong NJ

  • Today

    Today: Sunny, with a high near 78. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: A chance of sprinkles with a slight chance of showers between 4am and 5am, then a slight chance of showers after 5am. Increasing clouds, with a low around 59. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 84. West wind around 5 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 78. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
A chance of sprinkles with a slight chance of showers between 4am and 5am, then a slight chance of showers after 5am. Increasing clouds, with a low around 59. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 84. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 60. Calm wind.
Monday
Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
A chance of showers after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hopatcong NJ
 40.94°N 74.64°W (Elev. 971 ft)
Last Update:
4:08 am EDT May 16, 2026
Forecast Valid:
4am EDT May 16, 2026-6pm EDT May 22, 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