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.

38°F

3°C

Humidity 48%
Wind Speed Vrbl 3 mph
Barometer 30.44 in (1031.6 mb)
Dewpoint 20°F (-7°C)
Visibility NA
Last update 15 Mar 9:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Today

    Today: Partly sunny, with a high near 44. Southeast wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 44 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of rain before 2am, then rain and possibly a thunderstorm between 2am and 5am, then rain after 5am. Low around 37. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Rain, mainly before 7am, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 62. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 62 °F

    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 28. Breezy, with a south wind 20 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 28 °F

    Breezy.
    Severe
    Thunderstorms
    then Showers

  • Tuesday

    Tuesday: A chance of showers before 8am. Partly sunny, with a high near 35. West wind 10 to 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: 35 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 44. Southeast wind 5 to 10 mph, with gusts as high as 25 mph.
Tonight
A chance of rain before 2am, then rain and possibly a thunderstorm between 2am and 5am, then rain after 5am. Low around 37. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Rain, mainly before 7am, then showers and possibly a thunderstorm after 8am. Some of the storms could be severe. High near 62. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 28. Breezy, with a south wind 20 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 35. West wind 10 to 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.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 46.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 51.
Friday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Saturday
A chance of rain. Partly sunny, with a high near 48. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
4:11 am EDT Mar 15, 2026
Forecast Valid:
10am EDT Mar 15, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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