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

Briefing for Impacts from Strong Coastal Storm Sunday through Monday

A strong coastal storm is forecast to bring potentially significant impacts to our region. Moderate to major coastal flooding, strong to damaging winds, beach erosion, and very dangerous marine conditions are forecast. View this briefing for details on these threats. Read More >

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Overcast

55°F

13°C

Humidity 88%
Wind Speed NE 13 G 23 mph
Barometer 29.97 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 12 Oct 9:35 pm EDT
Extended Forecast for

Valley Forge PA

  • Tonight

    Tonight: Periods of rain. Low around 53. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain

  • Columbus Day

    Columbus Day: Periods of rain. High near 58. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain

  • Monday Night

    Monday Night: Showers likely, mainly before 2am. Cloudy, with a low around 52. North wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 8am. Mostly cloudy, with a high near 68. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 51. Northwest wind around 5 mph.

    Low: 51 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Periods of rain. Low around 53. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Periods of rain. High near 58. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers likely, mainly before 2am. Cloudy, with a low around 52. North wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers before 8am. Mostly cloudy, with a high near 68. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Partly cloudy, with a low around 51. Northwest wind around 5 mph.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Valley Forge PA
 40.08°N 75.48°W (Elev. 230 ft)
Last Update:
9:27 pm EDT Oct 12, 2025
Forecast Valid:
9pm EDT Oct 12, 2025-6pm EDT Oct 19, 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