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

Hot Temperatures in the Northwest U.S.; Excessive Rainfall Potential in the Southwest U.S.

Hot to extremely hot daytime temperatures remain in place across coastal southern California and the interior Northwest, with the Northwest carrying the potential for record-breaking high temperatures. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. this week. Read More >

Current conditions at

Philadelphia, Philadelphia International Airport (KPHL)

Lat: 39.87°NLon: 75.23°WElev: 7ft.

Partly Cloudy

61°F

16°C

Humidity 90%
Wind Speed Calm
Barometer 29.99 in (1015.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 3 Sep 5:54 am EDT
Extended Forecast for

Collingdale PA

  • Today

    Today: Mostly sunny, with a high near 80. Calm wind.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers after 2pm. Mostly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 65. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 80. Calm wind.
Tonight
Mostly clear, with a low around 61. South wind around 5 mph.
Thursday
A slight chance of showers after 2pm. Mostly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 65. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 71.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
Saturday Night
A chance of showers before 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Collingdale PA
 39.9°N 75.28°W (Elev. 62 ft)
Last Update:
5:43 am EDT Sep 3, 2025
Forecast Valid:
6am EDT Sep 3, 2025-6pm EDT Sep 9, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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