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.

46°F

8°C

Humidity 58%
Wind Speed S 5 mph
Barometer 30.01 in (1016.5 mb)
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 26 Mar 2:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Cloudy, with a low around 40. South wind around 10 mph.

    Low: 40 °F

    Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 11pm. Low around 44. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of rain before 11pm, then a slight chance of snow between 11pm and 2am. Mostly cloudy, with a low around 25. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Sunny, with a high near 38.

    High: 38 °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 49.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 40. South wind around 10 mph.
Thursday
A chance of showers, mainly after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers, mainly after 11pm. Low around 44. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain before 11pm, then a slight chance of snow between 11pm and 2am. Mostly cloudy, with a low around 25. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
Partly sunny, with a high near 57.
Monday Night
A chance of rain. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Wednesday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
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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:
2:15 am EDT Mar 26, 2026
Forecast Valid:
3am EDT Mar 26, 2026-6pm EDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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