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.

Overcast

42°F

6°C

Humidity 57%
Wind Speed Vrbl 7 mph
Barometer 29.69 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 13 Jan 11:35 pm EST
Extended Forecast for

Westtown PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Southwest wind 5 to 10 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly between 3pm and 5pm. Mostly cloudy, with a high near 49. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then rain and snow between 1am and 4am, then a chance of snow after 4am. Low around 24. South wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Rain Likely
    then
    Rain/Snow

  • Thursday

    Thursday: A chance of snow before 7am. Partly sunny, with a high near 29. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Southwest wind 5 to 10 mph.
Wednesday
A chance of rain, mainly between 3pm and 5pm. Mostly cloudy, with a high near 49. Southwest wind around 5 mph. Chance of precipitation is 30%.
Wednesday Night
Rain likely before 1am, then rain and snow between 1am and 4am, then a chance of snow after 4am. Low around 24. South wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow before 7am. Partly sunny, with a high near 29. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 31.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Mostly cloudy, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Partly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westtown PA
 39.96°N 75.56°W (Elev. 400 ft)
Last Update:
4:12 pm EST Jan 13, 2026
Forecast Valid:
11pm EST Jan 13, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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