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

Hazardous Weather Conditions

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Partly Cloudy

96°F

36°C

Humidity 32%
Wind Speed SW 12 G 20 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 18 May 1:54 pm EDT
Extended Forecast for

Clifton Heights PA

Heat Advisory May 18, 02:19pm until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 18, 02:19pm until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. South wind 5 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. Southwest wind around 10 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 58. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers

  • Thursday

    Thursday: A chance of showers between 8am and 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 93. South wind around 10 mph.
Tonight
Mostly clear, with a low around 70. South wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 95. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 74. Southwest wind around 10 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 15 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 58. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers between 8am and 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A chance of showers. Mostly cloudy, with a high near 67. Chance of precipitation is 40%.
Friday Night
Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Saturday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Sunday
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clifton Heights PA
 39.93°N 75.31°W (Elev. 200 ft)
Last Update:
4:09 am EDT May 18, 2026
Forecast Valid:
2pm EDT May 18, 2026-6pm EDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation