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

53°F

12°C

Humidity 59%
Wind Speed NW 8 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 19 Apr 4:54 pm EDT
Extended Forecast for

Marcus Hook PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: Increasing clouds, with a low around 40. Northwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 30 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Monday

    Monday: A slight chance of showers between 1pm and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 54. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.

    High: 54 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 34. North wind 5 to 10 mph.

    Low: 34 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 56. North wind around 5 mph becoming southwest in the afternoon.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 45. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 40%.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 40. Northwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 30 mph.
Monday
A slight chance of showers between 1pm and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 54. Northwest wind 5 to 15 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 34. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 56. North wind around 5 mph becoming southwest in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 45. South wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 74.
Friday Night
A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
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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:
4:11 pm EDT Apr 19, 2026
Forecast Valid:
5pm EDT Apr 19, 2026-6pm EDT Apr 26, 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