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.

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.66 in (1004.0 mb)
Dewpoint 62°F (17°C)
Visibility NA
Last update 11 Mar 9:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 39. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Showers
    Likely

  • Thursday

    Thursday: Rain before 11am, then a chance of rain and sleet between 11am and noon, then a chance of snow after noon. Temperature falling to around 37 by noon. Northwest wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than a half inch possible.

    High: 46 °F⇓

    Rain/Sleet
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Gradual
    Clearing

  • Friday

    Friday: Increasing clouds, with a high near 44. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 44 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 46.

    High: 46 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 38. Chance of precipitation is 90%.

    Low: 38 °F

    Chance Rain
    then Rain

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 39. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain before 11am, then a chance of rain and sleet between 11am and noon, then a chance of snow after noon. Temperature falling to around 37 by noon. Northwest wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than a half inch possible.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 26. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Increasing clouds, with a high near 44. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 33. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
Cloudy, with a high near 46.
Sunday Night
Rain, mainly after 2am. Low around 38. Chance of precipitation is 90%.
Monday
Rain. High near 59. Chance of precipitation is 90%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
9:24 pm EDT Mar 11, 2026
Forecast Valid:
10pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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