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.

Heavy Snow Freezing Fog

29°F

-2°C

Humidity 99%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 29°F (-2°C)
Visibility 0.25 mi
Last update 17 Jan 8:55 am EST
Extended Forecast for

4 Miles N Chatham PA

  • Today

    Today: Rain and snow before 2pm, then a slight chance of snow between 2pm and 3pm. High near 39. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 39 °F

    Snow then
    Rain/Snow
    Likely

  • Tonight

    Tonight: A slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 33. Northwest wind 5 to 10 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Northwest wind 5 to 10 mph.

    Low: 17 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 33. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

Detailed Forecast

Today
Rain and snow before 2pm, then a slight chance of snow between 2pm and 3pm. High near 39. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A slight chance of snow after 4am. Increasing clouds, with a low around 27. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 33. Northwest wind 5 to 10 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 17. Northwest wind 5 to 10 mph.
M.L.King Day
Sunny, with a high near 33. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Sunny, with a high near 21.
Tuesday Night
Mostly clear, with a low around 11.
Wednesday
Mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Chatham PA
 39.88°N 75.84°W (Elev. 499 ft)
Last Update:
4:11 am EST Jan 17, 2026
Forecast Valid:
9am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation