Severe Thunderstorms and Flash Flooding Risks - Saturday, July 18th

Scattered to numerous severe thunderstorms are likely across the region on Saturday, July 18th, including a risk of flash flooding for portions of the area. View this briefing for the details regarding these hazards. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Smoke

84°F

29°C

Humidity 53%
Wind Speed SW 6 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 65°F (18°C)
Visibility 3.00 mi
Heat Index86°F (30°C)
Last update 17 Jul 7:54 pm EDT
Extended Forecast for

Philadelphia PA

Flood Watch July 18, 10:00am until July 19, 02:00am
Click here for hazard details and duration
Flood Watch
  • Tonight

    Tonight: Widespread smoke. Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Smoke

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall.  Areas of smoke before noon. High near 88. South wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 88 °F

    Showers
    Likely then
    Heavy Rain

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 1am, then a chance of showers between 1am and 2am. Some of the storms could produce heavy rainfall.  Low around 72. Southwest wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 72 °F

    Heavy Rain
    then Chance
    Showers

  • Sunday

    Sunday: Partly sunny through mid morning, then becoming sunny, with a high near 85. Northwest wind around 10 mph.

    High: 85 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. North wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 87. Chance of precipitation is 50%.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am.  Low around 72. Chance of precipitation is 80%.

    Low: 72 °F

    Showers

Detailed Forecast

Tonight
Widespread smoke. Mostly cloudy, with a low around 72. Calm wind.
Saturday
Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. Areas of smoke before noon. High near 88. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and thunderstorms before 1am, then a chance of showers between 1am and 2am. Some of the storms could produce heavy rainfall. Low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Partly sunny through mid morning, then becoming sunny, with a high near 85. Northwest wind around 10 mph.
Sunday Night
Mostly clear, with a low around 64. North wind around 5 mph.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 72. Chance of precipitation is 80%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Wednesday Night
A chance of thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Philadelphia PA
 39.96°N 75.16°W (Elev. 26 ft)
4:08 pm EDT Jul 17, 2026
8pm EDT Jul 17, 2026-6pm EDT Jul 24, 2026
 
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Additional Resources

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