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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Light Rain

71°F

22°C

Humidity 90%
Wind Speed Calm
Barometer 29.97 in (1014.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 27 Aug 8:54 pm EDT
Extended Forecast for

Cheyney PA

Flood Watch until August 28, 04:00am
Severe T-storm Watch August 27, 09:27pm until August 27, 10:00pm
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch until August 28, 04:00am
    Severe T-storm Watch August 27, 09:27pm until August 27, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind becoming north around 5 mph.

    Low: 64 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 83. North wind around 5 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 64. Calm wind becoming north around 5 mph.
Saturday
Sunny, with a high near 83. North wind around 5 mph.
Saturday Night
Mostly clear, with a low around 65. Calm wind.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly cloudy, with a low around 71.
Tuesday
Partly sunny, with a high near 88.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cheyney PA
 39.93°N 75.54°W (Elev. 302 ft)
Last Update:
4:08 pm EDT Aug 27, 2026
Forecast Valid:
9pm EDT Aug 27, 2026-6pm EDT Sep 3, 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