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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Fair

80°F

27°C

Humidity 68%
Wind Speed E 7 mph
Barometer 30.14 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Aug 8:35 pm EDT
Extended Forecast for

King of Prussia PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. South wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 68. South wind around 5 mph.
Sunday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 63.
Tuesday
Partly sunny, with a high near 79.
Tuesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
King of Prussia PA
 40.07°N 75.4°W (Elev. 295 ft)
Last Update:
7:27 pm EDT Aug 15, 2025
Forecast Valid:
8pm EDT Aug 15, 2025-6pm EDT Aug 22, 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