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.

46°F

8°C

Humidity 72%
Wind Speed W 7 mph
Barometer 29.99 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 11 Nov 2:35 am EST
Extended Forecast for

Lionville-Marchwood PA

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, clear, with a low around 38. West wind around 5 mph.

    Low: 38 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming southwest around 5 mph.

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Southeast wind around 5 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain, mainly before 3pm. High near 60. East wind around 5 mph becoming west in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 37. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, clear, with a low around 38. West wind around 5 mph.
Veterans Day
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 46. Southeast wind around 5 mph.
Thursday
Rain, mainly before 3pm. High near 60. East wind around 5 mph becoming west in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 37. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Mostly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lionville-Marchwood PA
 40.05°N 75.63°W (Elev. 479 ft)
Last Update:
1:23 am EST Nov 11, 2026
Forecast Valid:
2am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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