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

Hazardous Weather Conditions

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Fair

25°C

77°F

Humidity 89%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 23°C (73°F)
Visibility 16 km
Heat Index26°C (78°F)
Last update 14 Jul 5:15 pm EDT
Extended Forecast for

Devon PA

Flood Watch July 14, 05:29pm until July 15, 02:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 14, 05:29pm until July 15, 02:00am

    NOW until 2:00am Tue

    Flood Watch

  • This Afternoon

    High: 31 °C

    Scattered
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Low around 22. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    Low: 22 °C

    T-storms then
    Scattered
    T-storms

  • Tuesday

    Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 31. Calm wind. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    High: 31 °C

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 22 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 31. South wind 5 to 10 km/h. Chance of precipitation is 70%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 31 °C

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 5am, then a chance of showers after 5am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 23 °C

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 50%.

    High: 32 °C

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 24. Chance of precipitation is 30%.

    Low: 24 °C

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Partly sunny, with a high near 31. Southwest wind around 10 km/h. Chance of precipitation is 50%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms, mainly before 11pm. Low around 22. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 31. Calm wind. Chance of precipitation is 60%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 22. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 31. South wind 5 to 10 km/h. Chance of precipitation is 70%. New rainfall amounts between 2.5 and 5 mm possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 5am, then a chance of showers after 5am. Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 24. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 21. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 30. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 30. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 29.
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ABOUT THIS FORECAST

 
Point Forecast:
Devon PA
 40.05°N 75.43°W (Elev. 499 m)
Last Update:
4:12 pm EDT Jul 14, 2025
Forecast Valid:
5pm EDT Jul 14, 2025-6pm EDT Jul 21, 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