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Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

69°F

21°C

Humidity 91%
Wind Speed Vrbl 3 mph
Barometer 30.03 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 27 Aug 2:55 am EDT
Extended Forecast for

Quarryville PA

Flood Watch August 27, 12:00pm until August 28, 02:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 66. South wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely, mainly after 3pm. Some of the storms could be severe. Mostly cloudy, with a high near 83. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers
    Likely then
    Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Severe
    Thunderstorms
    then Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after noon. Patchy fog before 10am. Otherwise, partly sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 66. South wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely and possibly a thunderstorm before 8am, then showers and thunderstorms likely, mainly after 3pm. Some of the storms could be severe. Mostly cloudy, with a high near 83. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely before 1am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A slight chance of showers, with thunderstorms also possible after noon. Patchy fog before 10am. Otherwise, partly sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 64. Calm wind.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 87.
Monday Night
Mostly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Quarryville PA
 39.89°N 76.16°W (Elev. 650 ft)
Last Update:
2:35 am EDT Aug 27, 2026
Forecast Valid:
3am EDT Aug 27, 2026-6pm EDT Sep 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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