Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Hazardous Weather Conditions

Flood Watch until August 3, 11:00 PM EDT

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Mostly Cloudy

87°F

31°C

Humidity	63%
Wind Speed	SW 12 mph
Barometer	29.79 in (1008.7 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	3 Aug 3:54 pm EDT

More Information:

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

Extended Forecast for

Marcus Hook PA

Flood Watch August 3, 04:38pm until August 3, 11:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch August 3, 04:38pm until August 3, 11:00pm
NOW until 11:00pm Mon
Flood Watch
This Afternoon
High: 84 °F
Slight Chance
T-storms
Tonight
Low: 67 °F
Partly Cloudy
Tuesday
High: 85 °F
Mostly Sunny
Tuesday Night
Low: 69 °F
Increasing
Clouds
Wednesday
High: 85 °F
Showers
Likely
Wednesday Night
Low: 74 °F
Showers
Likely then
Chance
Showers
Thursday
High: 89 °F
Mostly Sunny
Thursday Night
Low: 74 °F
Chance
Showers

Detailed Forecast

This Afternoon

A slight chance of showers and thunderstorms before 5pm. Partly sunny, with a high near 84. West wind around 10 mph. Chance of precipitation is 20%.

Tonight

Partly cloudy, with a low around 67. North wind around 5 mph.

Tuesday

Mostly sunny, with a high near 85. North wind around 5 mph becoming east in the afternoon.

Tuesday Night

Increasing clouds, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.

Wednesday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. East wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Mostly sunny, with a high near 89.

Thursday Night

A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.