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

Atmospheric River in the West; Strong Winds in the Northeast

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Hazardous Weather Conditions

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Fair

63°F

17°C

Humidity 39%
Wind Speed SW 8 G 16 mph
Barometer 29.75 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 5 Nov 3:15 pm EST
Extended Forecast for

Valley Forge PA

Wind Advisory November 5, 07:00pm until November 6, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A slight chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 42. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 61. Light south wind increasing to 10 to 15 mph in the morning.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain likely. Mostly cloudy, with a low around 51. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Rain Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of rain after 1am. Partly cloudy, with a low around 43. Chance of precipitation is 30%.

    Low: 43 °F

    Partly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain before 1am. Partly cloudy, with a low around 35. Chance of precipitation is 30%.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Tonight
A slight chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 42. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 55. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 32. Calm wind.
Friday
Partly sunny, with a high near 61. Light south wind increasing to 10 to 15 mph in the morning.
Friday Night
Rain likely. Mostly cloudy, with a low around 51. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A chance of rain after 1am. Partly cloudy, with a low around 43. Chance of precipitation is 30%.
Sunday
Rain likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Sunday Night
A chance of rain before 1am. Partly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 28.
Veterans Day
Mostly sunny, with a high near 45.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.1°N 75.45°W (Elev. 200 ft)
Last Update:
12:52 pm EST Nov 5, 2025
Forecast Valid:
3pm EST Nov 5, 2025-6pm EST Nov 12, 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