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.

Fair

63°F

17°C

Humidity 60%
Wind Speed NE 16 G 28 mph
Barometer 30.02 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 12 Oct 12:15 pm EDT
Extended Forecast for

Downingtown PA

  • This Afternoon

    This Afternoon: A chance of rain. Cloudy, with a high near 63. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Rain
    and Breezy

  • Tonight

    Tonight: Rain, mainly after 9pm. Low around 52. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Rain and
    Breezy

  • Columbus Day

    Columbus Day: Rain. High near 59. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: A chance of rain, mainly before 2am. Cloudy, with a low around 52. North wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance Rain

  • Tuesday

    Tuesday: Partly sunny, with a high near 68. North wind around 10 mph.

    High: 68 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

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

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of rain. Cloudy, with a high near 63. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after 9pm. Low around 52. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Columbus Day
Rain. High near 59. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A chance of rain, mainly before 2am. Cloudy, with a low around 52. North wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Partly sunny, with a high near 68. North wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Downingtown PA
 40°N 75.7°W (Elev. 299 ft)
Last Update:
4:09 am EDT Oct 12, 2025
Forecast Valid:
12pm EDT Oct 12, 2025-6pm EDT Oct 18, 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