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.

Mostly Cloudy

69°F

21°C

Humidity 63%
Wind Speed E 3 mph
Barometer 30.16 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 26 May 9:35 am EDT
Extended Forecast for

Westtown PA

  • Today

    Today: Mostly cloudy, with a high near 79. Northeast wind around 5 mph becoming south in the afternoon.

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers likely, mainly after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers likely, mainly before 1pm. Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 79 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 61. West wind around 5 mph.

    Low: 61 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 76. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 79. Northeast wind around 5 mph becoming south in the afternoon.
Tonight
Showers likely, mainly after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before 1pm. Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 61. West wind around 5 mph.
Thursday
Sunny, with a high near 76. North wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westtown PA
 39.93°N 75.54°W (Elev. 302 ft)
Last Update:
4:08 am EDT May 26, 2026
Forecast Valid:
9am EDT May 26, 2026-6pm EDT Jun 1, 2026
 
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