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

61°F

16°C

Humidity 87%
Wind Speed NE 9 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 May 6:54 pm EDT
Extended Forecast for

Merion Station PA

  • Tonight

    Tonight: A chance of showers, mainly after 4am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Memorial Day

    Memorial Day: Showers likely before 9am, then showers likely and possibly a thunderstorm between 9am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 9am. Otherwise, cloudy, with a high near 74. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Cloudy, with a low around 61. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 79. Northeast wind around 5 mph becoming south in the afternoon.

    High: 79 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly after 4am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Memorial Day
Showers likely before 9am, then showers likely and possibly a thunderstorm between 9am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 9am. Otherwise, cloudy, with a high near 74. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers. Cloudy, with a low around 61. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 79. Northeast wind around 5 mph becoming south in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
Mostly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merion Station PA
 39.99°N 75.27°W (Elev. 226 ft)
Last Update:
4:07 pm EDT May 24, 2026
Forecast Valid:
6pm EDT May 24, 2026-6pm EDT May 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation