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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. this week. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England today. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Mostly Cloudy

84°F

29°C

Humidity 49%
Wind Speed W 16 G 24 mph
Barometer 29.62 in (1002.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 29 Jul 4:54 pm EDT
Extended Forecast for

Chester PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. Northwest wind 10 to 15 mph.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 82. Northwest wind 10 to 15 mph.

    High: 82 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming clear, with a low around 67. North wind 5 to 10 mph.

    Low: 67 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 86. North wind around 5 mph becoming calm.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. South wind 5 to 10 mph becoming light and variable after midnight.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.

    Low: 70 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 66. Northwest wind 10 to 15 mph.
Thursday
Partly sunny, with a high near 82. Northwest wind 10 to 15 mph.
Thursday Night
Mostly cloudy, then gradually becoming clear, with a low around 67. North wind 5 to 10 mph.
Friday
Sunny, with a high near 86. North wind around 5 mph becoming calm.
Friday Night
Partly cloudy, with a low around 68. South wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Partly sunny, with a high near 88.
Saturday Night
Mostly cloudy, with a low around 70.
Sunday
A chance of showers. Mostly cloudy, with a high near 85. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Monday Night
A chance of thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chester PA
 39.85°N 75.38°W (Elev. 30 ft)
Last Update:
3:20 pm EDT Jul 29, 2026
Forecast Valid:
4pm EDT Jul 29, 2026-6pm EDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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