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.

54°F

12°C

Humidity 90%
Wind Speed Calm
Barometer 30.14 in (1021.0 mb)
Dewpoint 51°F (11°C)
Visibility NA
Last update 3 Apr 9:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: A slight chance of showers before midnight. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. West wind around 5 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Saturday

    Saturday: A chance of showers, mainly after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. North wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Patchy Fog
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly between 7pm and 2am. Cloudy, with a low around 44. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly after 8am. High near 63. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Partly cloudy, with a low around 36. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before midnight. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. West wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, mainly after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 67. North wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely, mainly between 7pm and 2am. Cloudy, with a low around 44. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly after 8am. High near 63. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely before 8pm. Partly cloudy, with a low around 36. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Sunny, with a high near 50.
Wednesday Night
Mostly clear, with a low around 31.
Thursday
Sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 41.
Friday
Mostly sunny, with a high near 68.
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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:
6:46 pm EDT Apr 3, 2026
Forecast Valid:
10pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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