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.

Mostly Cloudy

23°F

-5°C

Humidity 64%
Wind Speed NW 8 mph
Barometer 30.40 in
Dewpoint 12°F (-11°C)
Visibility 9.00 mi
Wind Chill14°F (-10°C)
Last update 18 Mar 7:55 am EDT
Extended Forecast for

3 Miles NNE Chatham PA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 39. Northwest wind around 5 mph becoming southeast in the afternoon.

    High: 39 °F

    Gradual
    Clearing

  • Tonight

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

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. South wind 5 to 10 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33. South wind around 5 mph becoming calm.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of rain after 2pm. Partly sunny, with a high near 55. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 20%.

    High: 55 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely before 8am. Partly sunny, with a high near 61. Chance of precipitation is 60%.

    High: 61 °F

    Rain Likely
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 2pm. Partly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 39. Northwest wind around 5 mph becoming southeast in the afternoon.
Tonight
Partly cloudy, with a low around 27. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 48. South wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 33. South wind around 5 mph becoming calm.
Friday
A slight chance of rain after 2pm. Partly sunny, with a high near 55. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain likely before 8am. Partly sunny, with a high near 61. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
A chance of rain after 2pm. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Chatham PA
 39.87°N 75.81°W (Elev. 427 ft)
Last Update:
4:34 am EDT Mar 18, 2026
Forecast Valid:
8am EDT Mar 18, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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