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.

39°F

4°C

Humidity 60%
Wind Speed NA
Barometer 30.32 in (1027.5 mb)
Dewpoint 26°F (-3°C)
Visibility NA
Last update 15 Mar 4:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Rain, with thunderstorms also possible after 5am. Low around 38. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. Some of the storms could be severe. High near 63. South wind 5 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers then
    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could be severe. Low around 28. Breezy, with a south wind 15 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: Mostly sunny, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. West wind 5 to 15 mph.

    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 45.

    High: 45 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain, with thunderstorms also possible after 5am. Low around 38. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. Some of the storms could be severe. High near 63. South wind 5 to 15 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 before 2am, then a chance of showers. Some of the storms could be severe. Low around 28. Breezy, with a south wind 15 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
Mostly sunny, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 20. West wind 5 to 15 mph.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 45.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 50.
Friday Night
A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
A chance of showers. Mostly cloudy, with a high near 53. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
4:13 pm EDT Mar 15, 2026
Forecast Valid:
5pm EDT Mar 15, 2026-6pm EDT Mar 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