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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Fog/Mist

63°F

17°C

Humidity 94%
Wind Speed E 5 mph
Barometer 30.13 in
Dewpoint 61°F (16°C)
Visibility 3.00 mi
Last update 28 Jun 3:15 am EDT
Extended Forecast for

Valley Forge PA

  • Overnight

    Overnight: A chance of showers and thunderstorms, mainly before 4am. Cloudy, with a low around 66. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Northwest wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 86. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, mainly before 4am. Cloudy, with a low around 66. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers, with thunderstorms also possible after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 87. Northwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 67. Calm wind.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 86. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm. Low around 68. Chance of precipitation is 80%.
Wednesday
Sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 66.
Independence Day
Sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.1°N 75.48°W (Elev. 200 ft)
Last Update:
6:58 pm EDT Jun 27, 2025
Forecast Valid:
3am EDT Jun 28, 2025-6pm EDT Jul 4, 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