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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

63°F

17°C

Humidity 99%
Wind Speed W 3 mph
Barometer 29.91 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 14 Oct 7:35 am EDT
Extended Forecast for

Lionville-Marchwood PA

  • Today

    Today: A slight chance of showers after 10am. Increasing clouds, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming north after midnight.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 54. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 5pm. High near 76. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 52. Breezy.

    High: 52 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Saturday Night

    Saturday Night: Patchy frost. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Patchy Frost
    then Sunny

Detailed Forecast

Today
A slight chance of showers after 10am. Increasing clouds, with a high near 81. West wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 54. Northwest wind 5 to 10 mph becoming north after midnight.
Thursday
Sunny, with a high near 66. North wind around 5 mph becoming east in the afternoon.
Thursday Night
Showers, mainly after 2am. Low around 54. Southeast wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, with thunderstorms also possible after 5pm. High near 76. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 43. Breezy. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 52. Breezy.
Saturday Night
Patchy frost. Otherwise, mostly clear, with a low around 35.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lionville-Marchwood PA
 40.05°N 75.63°W (Elev. 479 ft)
Last Update:
4:09 am EDT Oct 14, 2026
Forecast Valid:
7am EDT Oct 14, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation