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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Overcast

58°F

14°C

Humidity 75%
Wind Speed S 13 mph
Barometer 29.80 in (1009.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 Mar 11:54 am EDT
Extended Forecast for

Marcus Hook PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 73. Southwest wind 5 to 10 mph.

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers after 3am. Low around 48. Southwest wind around 5 mph becoming north in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Chance
    T-storms then
    Showers

  • Monday

    Monday: A chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 52. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. North wind around 5 mph becoming west in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A chance of rain before 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.

    High: 62 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 73. Southwest wind 5 to 10 mph.
Tonight
Showers and thunderstorms likely, then showers after 3am. Low around 48. Southwest wind around 5 mph becoming north in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 52. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly clear, with a low around 32. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. North wind around 5 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 57.
Wednesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Thursday
A chance of rain before 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Thursday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Friday
Rain likely. Partly sunny, with a high near 55. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Sunny, with a high near 47.
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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:
10:41 am EDT Mar 22, 2026
Forecast Valid:
12pm EDT Mar 22, 2026-6pm EDT Mar 28, 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