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

Briefing for Impacts from Hurricane Erin through Friday

Hurricane Erin is expected to bring several coastal and marine hazards to the coasts of New Jersey and Delaware through Friday. Widespread coastal flooding, high surf, high risk of rip currents, beach erosion, and dangerous marine conditions are forecast. View this briefing for details on these threats. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Overcast

63°F

17°C

Humidity 93%
Wind Speed NE 15 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Aug 5:54 am EDT
Extended Forecast for

Monroeville NJ

Coastal Flood Advisory August 21, 09:00pm until August 23, 02:00am
Click here for hazard details and duration
Coastal Flood Advisory

  • Today

    Today: A slight chance of showers before 8am. Mostly cloudy, with a high near 72. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 72 °F

    Slight Chance
    Showers then
    Cloudy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 58. North wind around 10 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Gradual
    Clearing

  • Friday

    Friday: Sunny, with a high near 82. North wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Light southwest wind becoming south 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers before 8am. Mostly cloudy, with a high near 72. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 58. North wind around 10 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 82. North wind 5 to 10 mph.
Friday Night
Clear, with a low around 58. Calm wind.
Saturday
Sunny, with a high near 82. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 64.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Sunday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Monday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monroeville NJ
 39.63°N 75.19°W (Elev. 98 ft)
Last Update:
4:11 am EDT Aug 21, 2025
Forecast Valid:
6am EDT Aug 21, 2025-6pm EDT Aug 27, 2025
 
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