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

63°F

17°C

Humidity 58%
Wind Speed E 7 mph
Barometer 30.33 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 22 May 12:55 pm EDT
Extended Forecast for

Coatesville PA

  • This Afternoon

    This Afternoon: A slight chance of showers before 2pm, then a chance of showers after 3pm. Cloudy, with a high near 63. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 8pm, then rain, mainly after 3am. Low around 45. East wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Chance
    Showers then
    Rain

  • Saturday

    Saturday: Rain. High near 56. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 56 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 47. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 47 °F

    Rain

  • Sunday

    Sunday: Showers likely before 2pm. Cloudy, with a high near 67. East wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm, mainly after 2am. Cloudy, with a low around 55. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers then
    Showers
    Likely

  • Memorial Day

    Memorial Day: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A slight chance of showers before 2pm, then a chance of showers after 3pm. Cloudy, with a high near 63. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers before 8pm, then rain, mainly after 3am. Low around 45. East wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 56. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday Night
Rain. Low around 47. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Showers likely before 2pm. Cloudy, with a high near 67. East wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely and possibly a thunderstorm, mainly after 2am. Cloudy, with a low around 55. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Memorial Day
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Tuesday
Mostly cloudy, with a high near 77.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Coatesville PA
 39.99°N 75.82°W (Elev. 400 ft)
Last Update:
7:31 am EDT May 22, 2026
Forecast Valid:
1pm EDT May 22, 2026-6pm EDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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