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

Briefing for Flash Flood and Severe Storm Risks through Tonight

Potentially significant flash flooding is possible this afternoon into tonight. Some isolated severe thunderstorms are also possible. See this briefing for details on these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Thunderstorm Rain in Vicinity

75°F

24°C

Humidity 89%
Wind Speed E 7 mph
Barometer 29.96 in
Dewpoint 72°F (22°C)
Visibility 5.00 mi
Last update 31 Jul 2:35 pm EDT
Extended Forecast for

Aston PA

Flood Watch until August 1, 06:00am
Severe T-storm Watch until July 31, 08:00pm
Flash Flood Warning until July 31, 06:15pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
Flash Flood Warning
  •  
    Flood Watch until August 1, 06:00am
    Severe T-storm Watch until July 31, 08:00pm
    Flash Flood Warning until July 31, 06:15pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 89 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 65. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 8am and noon. Mostly cloudy, with a high near 74. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. North wind 5 to 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. North wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms. Some of the storms could be severe. High near 89. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms before 4am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 65. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers between 8am and noon. Mostly cloudy, with a high near 74. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 62. North wind 5 to 10 mph.
Saturday
Sunny, with a high near 80. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly cloudy, with a low around 66.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Aston PA
 39.88°N 75.46°W (Elev. 220 ft)
Last Update:
1:34 pm EDT Jul 31, 2025
Forecast Valid:
3pm EDT Jul 31, 2025-6pm EDT Aug 7, 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