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.

27°F

-3°C

Humidity 89%
Wind Speed Calm
Barometer 29.76 in (1008.8 mb)
Dewpoint 24°F (-4°C)
Visibility NA
Last update 14 Mar 2:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: Mostly clear, with a low around 32. Southwest wind around 10 mph, with gusts as high as 30 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 45. West wind around 15 mph, with gusts as high as 40 mph.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 29. Northwest wind around 5 mph becoming calm after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, with a high near 45. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 45 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 37. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 62. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 62 °F

    Showers

  • Monday Night

    Monday Night: Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. Breezy. Chance of precipitation is 90%.

    Low: 30 °F

    Breezy.
    Showers then
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow showers before 8am. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 32. Southwest wind around 10 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 45. West wind around 15 mph, with gusts as high as 40 mph.
Saturday Night
Increasing clouds, with a low around 29. Northwest wind around 5 mph becoming calm after midnight.
Sunday
Cloudy, with a high near 45. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Rain, mainly after 2am. Low around 37. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, with thunderstorms also possible after 2pm. High near 62. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. Breezy. Chance of precipitation is 90%.
Tuesday
A chance of rain and snow showers before 8am. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Cloudy, with a low around 25.
Thursday
Mostly cloudy, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, 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:
9:46 pm EDT Mar 13, 2026
Forecast Valid:
3am EDT Mar 14, 2026-6pm EDT Mar 20, 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