Briefing for Late June Heat Wave

An early season heat wave will bring dangerously hot and humid conditions across most of the region beginning Sunday through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Fair

88°F

31°C

Humidity	59%
Wind Speed	NW 6 mph
Barometer	30.15 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	23 Jun 8:55 am EDT

More Information:

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

Extended Forecast for

Valley Forge PA

Extreme Heat Warning June 23, 09:13am until June 25, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 23, 09:13am until June 25, 08:00pm
NOW until 8:00pm Wed
Extreme Heat Warning
Today
High: 98 °F
Hot
Tonight
Low: 78 °F
Mostly Clear
Tuesday
High: 99 °F
Hot
Tuesday Night
Low: 77 °F
Mostly Clear
Wednesday
High: 96 °F
Sunny then
Slight Chance
T-storms
Wednesday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 90 °F
Partly Sunny
then Showers
Likely
Thursday Night
Low: 69 °F
Showers
Likely then
Chance
T-storms

Detailed Forecast

Today

Sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming north around 5 mph in the afternoon.

Tonight

Mostly clear, with a low around 78. Calm wind.

Tuesday

Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming northwest around 5 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 77. West wind around 5 mph becoming calm.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.

Wednesday Night

A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Thursday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Friday

A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.

Sunday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Chance of precipitation is 40%.