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Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

56°F

13°C

Humidity 39%
Wind Speed Calm
Barometer 30.53 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 18 Oct 5:55 pm EDT
Extended Forecast for

Mendenhall PA

Frost Advisory October 19, 01:00am until October 19, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Areas of frost after 5am. Otherwise, clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 7am. Otherwise, sunny, with a high near 64. Northeast wind 5 to 10 mph.

    High: 64 °F

    Areas Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North wind around 5 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 66. North wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. North wind 5 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 5am. Otherwise, clear, with a low around 36. Calm wind.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 64. Northeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 44. North wind around 5 mph.
Tuesday
Sunny, with a high near 66. North wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 43. North wind 5 to 10 mph.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mendenhall PA
 39.86°N 75.72°W (Elev. 397 ft)
Last Update:
4:08 pm EDT Oct 18, 2026
Forecast Valid:
6pm EDT Oct 18, 2026-6pm EDT Oct 25, 2026
 
Forecast Discussion
 
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Additional Resources

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