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.

51°F

11°C

Humidity 39%
Wind Speed Vrbl 6 mph
Barometer 30.16 in (1022.0 mb)
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill49°F (9°C)
Last update 25 Mar 6:54 pm EDT
Extended Forecast for

Lake Hopatcong NJ

  • Tonight

    Tonight: Cloudy, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Cloudy

  • Thursday

    Thursday: A slight chance of showers after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 47. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly before 8am. High near 49. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. North wind around 5 mph.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Showers, mainly after 2am. Low around 47. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers, mainly before 8am. High near 49. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, with a low around 25. North wind around 5 mph.
Saturday
Sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly cloudy, with a high near 54.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 30%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Hopatcong NJ
 40.96°N 74.61°W (Elev. 984 ft)
Last Update:
4:10 pm EDT Mar 25, 2026
Forecast Valid:
7pm EDT Mar 25, 2026-6pm EDT Apr 1, 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