National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Coastal and Marine Hazards This Week

Coastal flooding, dangerous rip currents, high surf, and hazardous marine conditions are expected through this week. View this briefing for more details. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

51°F

11°C

Humidity 74%
Wind Speed Vrbl 3 mph
Barometer 30.47 in (1031.9 mb)
Dewpoint 43°F (6°C)
Visibility NA
Last update 23 Sep 11:54 pm EDT
Extended Forecast for

Hopatcong NJ

  • Overnight

    Overnight: Mostly clear, with a low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. Northeast wind 10 to 15 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers after 2pm. Partly sunny, with a high near 66. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 51. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.

    High: 64 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 46. Northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 49. Northeast wind 10 to 15 mph.
Friday
A chance of showers after 2pm. Partly sunny, with a high near 66. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51. North wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Partly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 74.
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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:
4:10 pm EDT Sep 23, 2026
Forecast Valid:
12am EDT Sep 24, 2026-6pm EDT Sep 30, 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