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

Dangerous Heat and Humidity Wednesday through Saturday

Dangerously hot and humid conditions are expected to build starting Wednesday through Saturday. Additionally, there will be a threat of thunderstorms on some of the days. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

65°F

18°C

Humidity 93%
Wind Speed S 3 mph
Barometer 30.13 in (1019.4 mb)
Dewpoint 63°F (17°C)
Visibility NA
Last update 30 Jun 4:54 am EDT
Extended Forecast for

Hopatcong NJSimilar City Names

Extreme Heat Warning July 1, 12:00pm until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 68. Southwest wind around 10 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Heat index values as high as 102. West wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. Southwest wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 98. Chance of precipitation is 30%.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Partly Cloudy

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 30%.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 88. Southwest wind 5 to 10 mph.
Tonight
A slight chance of showers and thunderstorms before 3am. Partly cloudy, with a low around 68. Southwest wind around 10 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Heat index values as high as 102. West wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 74. Southwest wind around 5 mph.
Thursday
Sunny and hot, with a high near 99. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Clear, with a low around 75.
Friday
A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 98. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hopatcong NJSimilar City Names
 40.97°N 74.67°W (Elev. 1030 ft)
Last Update:
4:08 am EDT Jun 30, 2026
Forecast Valid:
4am EDT Jun 30, 2026-6pm EDT Jul 6, 2026
 
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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