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

Dangerous Heat and Humidity Today through Saturday

Dangerously hot and humid conditions are expected to build starting today 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

Philadelphia, Northeast Philadelphia Airport (KPNE)

Lat: 40.08°NLon: 75.01°WElev: 118ft.

A Few Clouds

96°F

36°C

Humidity 49%
Wind Speed W 12 G 20 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 1 Jul 2:54 pm EDT
Extended Forecast for

Merchantville NJ

Extreme Heat Warning July 1, 03:14pm until July 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 03:14pm until July 4, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 98 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 9pm. Some of the storms could be severe. Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 77 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 105. Heat index values as high as 112. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 105 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 82. Southwest wind around 5 mph.

    Low: 82 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 104. West wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 80. Chance of precipitation is 20%.

    Low: 80 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 101. Chance of precipitation is 40%.

    High: 101 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Some of the storms could be severe. Mostly sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly before 9pm. Some of the storms could be severe. Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny and hot, with a high near 105. Heat index values as high as 112. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 82. Southwest wind around 5 mph.
Friday
Sunny and hot, with a high near 104. West wind 5 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 80. Chance of precipitation is 20%.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 101. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merchantville NJ
 39.95°N 75.07°W (Elev. 7 ft)
Last Update:
2:12 pm EDT Jul 1, 2026
Forecast Valid:
3pm EDT Jul 1, 2026-6pm EDT Jul 8, 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