Heat Expands for Center of the Nation; Severe Thunderstorms for Plains and Upper Midwest

Dangerous heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest. Critical fire weather for portions of the Intermountain West. Risk for severe thunderstorms and flash flooding across the Upper Midwest/Great Lakes, Ohio Valley, and portions of the mid-Atlantic. Active monsoonal moisture fuels thunderstorms over the Southwest. Hurricane Fausto in the Pacific, should weaken Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

A Few Clouds

79°F

26°C

Humidity 42%
Wind Speed S 5 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 26 Jul 11:54 am EDT
Extended Forecast for

Merion Station PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. Southeast wind around 5 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Scattered showers and thunderstorms after 2pm.  Increasing clouds, with a high near 85. Southwest wind around 5 mph.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Monday Night

    Monday Night: Scattered showers and thunderstorms, mainly after 2am.  Mostly cloudy, with a low around 67. South wind around 5 mph.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Scattered
    T-storms then
    Scattered
    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall.  High near 81. South wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 81 °F

    Showers
    Likely then
    Heavy Rain

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could produce heavy rainfall.  Low around 66. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 66 °F

    Heavy Rain
    then Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm.  Partly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 85. Southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 65. South wind around 5 mph.
Monday
Scattered showers and thunderstorms after 2pm. Increasing clouds, with a high near 85. Southwest wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Scattered showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 67. South wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 81. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 66. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 67.
Saturday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Merion Station PA
 39.99°N 75.27°W (Elev. 226 ft)
6:58 am EDT Jul 26, 2026
12pm EDT Jul 26, 2026-6pm EDT Aug 1, 2026
 
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Additional Resources

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