National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms, Heavy Rainfall and Dangerous Heat

Severe thunderstorms are expected today and Friday from the upper Midwest, central Great Lakes into the Ohio and mid-Mississippi Valley's. In addition, heavy rainfall threat increases on Friday across the Ohio Valley. Meanwhile, early summer-like heat wave across portions of southern Texas with new daily records are forecast today and through the weekend; The heat spreads across the Gulf States. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

62°F

17°C

Humidity 96%
Wind Speed Calm
Barometer 29.82 in (1009.3 mb)
Dewpoint 61°F (16°C)
Visibility NA
Last update 16 May 12:54 am EDT
Extended Forecast for

Lake Hopatcong NJ

  • Overnight

    Overnight: A slight chance of showers. Areas of fog. Otherwise, mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    Showers and
    Areas Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 76. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely and
    Areas Fog

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly after 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Areas of fog before 8am. High near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers and
    Areas Fog

  • Saturday Night

    Saturday Night: Showers likely before 8pm. Partly cloudy, with a low around 56. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Showers
    Likely then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers. Areas of fog. Otherwise, mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 3pm, then a chance of showers and thunderstorms after 3pm. Areas of fog before 2pm. Otherwise, mostly cloudy, with a high near 76. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. Areas of fog before 8am. High near 78. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely before 8pm. Partly cloudy, with a low around 56. West wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
Showers 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
 40.94°N 74.61°W (Elev. 928 ft)
Last Update:
10:13 pm EDT May 15, 2025
Forecast Valid:
1am EDT May 16, 2025-6pm EDT May 22, 2025
 
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