Dangerous Heat and Humidity Through Saturday

Dangerously hot and humid conditions are expected to build through Saturday. Additionally, there will be a threat of thunderstorms Friday through Sunday. 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.

Fair

100°F

38°C

Humidity	41%
Wind Speed	SW 13 mph
Barometer	29.95 in (1014.0 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	110°F (43°C)
Last update	2 Jul 6:54 pm EDT

More Information:

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

Extended Forecast for

Westtown PA

Extreme Heat Warning July 2, 07:05pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 2, 07:05pm until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Tonight
Low: 79 °F
Mostly Clear
Friday
High: 99 °F
Hot
Friday Night
Low: 80 °F
Mostly Clear
Independence Day
High: 97 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 87 °F
Slight Chance
Showers then
Showers
Likely
Sunday Night
Low: 69 °F
Showers
Likely
Monday
High: 80 °F
Showers
Likely

Detailed Forecast

Tonight

Mostly clear, with a low around 79. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday

Sunny and hot, with a high near 99. Heat index values as high as 106. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday Night

Mostly clear, with a low around 80. West wind around 5 mph.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 102. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. North wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

Monday

Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Tuesday

A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.

Tuesday Night

Partly cloudy, with a low around 65.

Wednesday

Mostly sunny, with a high near 82.