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

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Snow Fog/Mist

33°F

1°C

Humidity 100%
Wind Speed W 20 G 31 mph
Barometer 29.52 in
Dewpoint 33°F (1°C)
Visibility 3.00 mi
Wind Chill21°F (-6°C)
Last update 17 Mar 12:55 am EDT
Extended Forecast for

Westtown PA

Wind Advisory until March 17, 02:00am
Click here for hazard details and duration
...
  •  
    Wind Advisory until March 17, 02:00am

    NOW until 2:00am Tue

    Wind Advisory

  • Overnight

    Low: 29 °F

    Rain/Snow
    Likely and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 38 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 24. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Increasing clouds, with a high near 39. West wind 5 to 10 mph becoming south in the afternoon.

    High: 39 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. South wind around 5 mph.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Overnight
Rain showers likely, possibly mixing with snow after 2am, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 29. Breezy, with a west wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tuesday
Partly sunny, with a high near 38. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Tuesday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 24. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Increasing clouds, with a high near 39. West wind 5 to 10 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 27. South wind around 5 mph.
Thursday
Partly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 56.
Friday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.
Saturday
A chance of rain. Partly sunny, with a high near 55. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westtown PA
 39.94°N 75.57°W (Elev. 299 ft)
Last Update:
11:58 pm EDT Mar 16, 2026
Forecast Valid:
12am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation