National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Mostly Cloudy

77°F

25°C

Humidity 43%
Wind Speed NW 7 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Apr 7:54 pm EDT
Extended Forecast for

Marcus Hook PA

Coastal Flood Advisory April 18, 11:00pm until April 19, 03:00am
Click here for hazard details and duration
Coastal Flood Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 57. North wind around 5 mph becoming east after midnight.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69. East wind 5 to 10 mph becoming southeast in the afternoon.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Increasing clouds, with a low around 49. Southeast wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly between 8am and 2pm. High near 59. Northwest wind 5 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 40. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers before 2pm. Mostly sunny, with a high near 53. Chance of precipitation is 20%.

    High: 53 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 57. North wind around 5 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 69. East wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
A chance of showers after 2am. Increasing clouds, with a low around 49. Southeast wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers, mainly between 8am and 2pm. High near 59. Northwest wind 5 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 40. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A slight chance of showers before 2pm. Mostly sunny, with a high near 53. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marcus Hook PA
 39.81°N 75.42°W (Elev. 0 ft)
Last Update:
4:10 pm EDT Apr 17, 2026
Forecast Valid:
8pm EDT Apr 17, 2026-6pm EDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation