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.

Overcast

66°F

19°C

Humidity 81%
Wind Speed S 8 mph
Barometer 29.71 in (1005.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 11 Mar 9:54 pm EDT
Extended Forecast for

Marcus Hook PA

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers after 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 44. Southwest wind around 15 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Heavy Rain
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Temperature falling to around 40 by 3pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 52 °F⇓

    Rain and
    Breezy then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 31. West wind 5 to 10 mph.

    Low: 31 °F

    Gradual
    Clearing

  • Friday

    Friday: Partly sunny, with a high near 50. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 50 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Chance Rain
    then Rain

Detailed Forecast

Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers after 3am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 44. Southwest wind around 15 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain before 4pm, then a chance of rain and snow between 4pm and 5pm, then a chance of rain after 5pm. Temperature falling to around 40 by 3pm. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 31. West wind 5 to 10 mph.
Friday
Partly sunny, with a high near 50. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Partly cloudy, with a low around 41. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly cloudy, with a low around 37.
Sunday
Cloudy, with a high near 54.
Sunday Night
Rain, mainly after 2am. Low around 50. Chance of precipitation is 90%.
Monday
Rain. High near 66. Chance of precipitation is 90%.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Tuesday
A chance of snow. Mostly sunny, with a high near 38. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Mostly sunny, with a high near 39.
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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:
10:05 pm EDT Mar 11, 2026
Forecast Valid:
10pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation