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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Overcast

76°F

24°C

Humidity 85%
Wind Speed SW 7 mph
Barometer 30.06 in (1017.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 18 Sep 12:54 am EDT
Extended Forecast for

Philadelphia PA

  • Overnight

    Overnight: A slight chance of showers before 2am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 84. North wind 5 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 62. North wind around 5 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 64. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 77. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Showers, mainly before 2am. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers before 2am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 84. North wind 5 to 10 mph.
Friday Night
Increasing clouds, with a low around 62. North wind around 5 mph.
Saturday
Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.
Saturday Night
A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 64. East wind 5 to 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers likely, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 77. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers, mainly before 2am. Low around 65. Chance of precipitation is 80%.
Monday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Philadelphia PA
 39.96°N 75.16°W (Elev. 26 ft)
Last Update:
4:09 pm EDT Sep 17, 2026
Forecast Valid:
1am EDT Sep 18, 2026-6pm EDT Sep 24, 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