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

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Mostly Cloudy

75°F

24°C

Humidity	66%
Wind Speed	SW 9 mph
Barometer	30.15 in (1020.8 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	30 Jun 6:54 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles SE Merion Station PA

Extreme Heat Warning July 1, 12:00pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Today
High: 91 °F
Sunny
Tonight
Low: 70 °F
Partly Cloudy
Wednesday
High: 97 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 103 °F
Hot
Thursday Night
Low: 80 °F
Clear
Friday
High: 104 °F
Hot
Friday Night
Low: 78 °F
Partly Cloudy
Independence Day
High: 101 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 91. Southwest wind 5 to 10 mph.

Tonight

Partly cloudy, with a low around 70. South wind around 10 mph.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind around 10 mph. Chance of precipitation is 20%.

Wednesday Night

Mostly clear, with a low around 76. Southwest wind 5 to 10 mph.

Thursday

Sunny and hot, with a high near 103. West wind 5 to 10 mph.

Thursday Night

Clear, with a low around 80.

Friday

Sunny and hot, with a high near 104.

Friday Night

Partly cloudy, with a low around 78.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 101. Chance of precipitation is 30%.