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 - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Partly Cloudy

86°F

30°C

Humidity	51%
Wind Speed	S 9 mph
Barometer	30.12 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	30 Jun 1:15 pm EDT

More Information:

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

Extended Forecast for

Valley Forge PA

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

Click here for hazard details and duration

Extreme Heat Warning

This Afternoon
High: 91 °F
Mostly Sunny
Tonight
Low: 70 °F
Mostly Cloudy
then Slight
Chance
Showers
Wednesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 75 °F
Slight Chance
T-storms then
Slight Chance
Showers
Thursday
High: 100 °F
Hot
Thursday Night
Low: 80 °F
Mostly Clear
Friday
High: 102 °F
Hot
Friday Night
Low: 77 °F
Partly Cloudy
Independence Day
High: 100 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 91. Southwest wind 10 to 15 mph.

Tonight

A slight chance of showers after 1am. Mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Partly cloudy, with a low around 75. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

Thursday

Sunny and hot, with a high near 100. West wind 5 to 10 mph.

Thursday Night

Mostly clear, with a low around 80.

Friday

Sunny and hot, with a high near 102.

Friday Night

Partly cloudy, with a low around 77.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.