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.

60°F

16°C

Humidity 87%
Wind Speed N 8 mph
Barometer 30.08 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Oct 3:55 am EDT
Extended Forecast for

Mendenhall PA

  • Overnight

    Overnight: Partly cloudy, with a low around 54. North wind around 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 3pm. Mostly sunny, with a high near 65. Northeast wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.

    High: 65 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers before 8am, then a slight chance of showers and thunderstorms after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 76. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 45. West wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 52. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance
    Showers and
    Breezy then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 10am. Otherwise, sunny, with a high near 55.

    High: 55 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. North wind around 10 mph.
Thursday
A slight chance of showers after 3pm. Mostly sunny, with a high near 65. Northeast wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 20%.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 55. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers before 8am, then a slight chance of showers and thunderstorms after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 76. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 45. West wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 52. Breezy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Areas of frost. Otherwise, mostly clear, with a low around 35.
Sunday
Areas of frost before 10am. Otherwise, sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Mendenhall PA
 39.86°N 75.72°W (Elev. 397 ft)
Last Update:
2:27 am EDT Oct 15, 2026
Forecast Valid:
3am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation