National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

28°F

-2°C

Humidity 63%
Wind Speed Vrbl 3 mph
Barometer 30.59 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 2 Mar 7:35 pm EST
Extended Forecast for

3 Miles NNE Unionville PA

Winter Weather Advisory March 3, 05:00am until March 3, 11:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A chance of snow, mainly after 4am. Mostly cloudy, with a low around 29. Southeast wind around 5 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: Rain, snow, and freezing rain, becoming all rain after 10am. High near 41. East wind around 5 mph. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Wintry Mix
    then Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly before 4am. Low around 38. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 56. Northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 43. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain Likely

  • Thursday

    Thursday: A chance of rain. Cloudy, with a high near 60. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 47. Chance of precipitation is 70%.

    Low: 47 °F

    Rain Likely

  • Friday

    Friday: A chance of rain before 1pm. Partly sunny, with a high near 65. Chance of precipitation is 30%.

    High: 65 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow, mainly after 4am. Mostly cloudy, with a low around 29. Southeast wind around 5 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Rain, snow, and freezing rain, becoming all rain after 10am. High near 41. East wind around 5 mph. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain, mainly before 4am. Low around 38. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 56. Northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 43. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of rain. Cloudy, with a high near 60. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 47. Chance of precipitation is 70%.
Friday
A chance of rain before 1pm. Partly sunny, with a high near 65. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 65.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Sunday
A chance of rain. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Monday
A chance of rain. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Unionville PA
 39.93°N 75.71°W (Elev. 295 ft)
Last Update:
4:11 pm EST Mar 2, 2026
Forecast Valid:
7pm EST Mar 2, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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