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

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Partly Cloudy

56°F

13°C

Humidity 75%
Wind Speed Calm
Barometer 29.96 in (1014.3 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 8 Mar 10:54 pm EDT
Extended Forecast for

Marcus Hook PA

  • Tonight

    Tonight: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 45. Southwest wind around 5 mph becoming calm.

    Low: 45 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.

    High: 72 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. South wind around 5 mph becoming calm.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of rain showers before 2pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.

    High: 59 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of snow showers before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Snow
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 42. Calm wind.
Monday
Sunny, with a high near 68. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 45. Southwest wind around 5 mph becoming calm.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 52. South wind around 5 mph becoming calm.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Thursday
A chance of rain showers before 2pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Thursday Night
A chance of snow showers before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 52.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Cloudy, with a high near 56.
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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:
4:18 pm EDT Mar 8, 2026
Forecast Valid:
11pm EDT Mar 8, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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