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.

70°F

21°C

Humidity 37%
Wind Speed Vrbl 6 mph
Barometer 29.88 in (1011.4 mb)
Dewpoint 42°F (6°C)
Visibility NA
Last update 8 Oct 2:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Mostly clear, with a low around 47. Northwest wind 5 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Northwest wind 5 to 15 mph.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. Northwest wind around 5 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Northwest wind around 5 mph becoming calm.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after 2pm. Cloudy, with a high near 65. Chance of precipitation is 50%.

    High: 65 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly after 8pm. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Columbus Day

    Columbus Day: Showers likely before 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 66. Northwest wind 5 to 15 mph.
Friday Night
Mostly clear, with a low around 46. Northwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 67. Northwest wind around 5 mph becoming calm.
Saturday Night
Mostly cloudy, with a low around 51. Calm wind.
Sunday
A chance of showers, mainly after 2pm. Cloudy, with a high near 65. Chance of precipitation is 50%.
Sunday Night
Showers, mainly after 8pm. Low around 56. Chance of precipitation is 90%.
Columbus Day
Showers likely before 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 68. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.98°N 74.6°W (Elev. 997 ft)
Last Update:
4:09 am EDT Oct 8, 2026
Forecast Valid:
3pm EDT Oct 8, 2026-6pm EDT Oct 15, 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