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

A coastal storm is expected to impact portions of the area Saturday night through Sunday.

A coastal storm is expected to impact the area Saturday night through Sunday. Impacts are expected to be confined mainly near the coasts of New Jersey and Delaware, where the highest light snowfall accumulations will occur. Minor coastal flooding and strong winds are also forecast along the Atlantic coast. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

18°F

-8°C

Humidity 53%
Wind Speed NW 9 mph
Barometer 30.07 in
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 31 Jan 2:55 pm EST
Extended Forecast for

3 Miles NNE Unionville PA

Cold Weather Advisory January 31, 03:09pm until February 1, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 31, 03:09pm until February 1, 10:00am

    NOW until 10:00am Sun

    Cold Weather Advisory

  • Tonight

    Low: 8 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 23. Wind chill values as low as -9. North wind around 15 mph, with gusts as high as 30 mph.

    High: 23 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13. Wind chill values as low as -1. Northwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 13 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values as low as -1. Northwest wind around 10 mph, with gusts as high as 25 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12. West wind around 5 mph.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly cloudy, with a low around 8. Wind chill values as low as -8. North wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Partly sunny, with a high near 23. Wind chill values as low as -9. North wind around 15 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 13. Wind chill values as low as -1. Northwest wind around 10 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 29. Wind chill values as low as -1. Northwest wind around 10 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 12. West wind around 5 mph.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Partly sunny, with a high near 28.
Friday Night
A chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 24.
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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 am EST Jan 31, 2026
Forecast Valid:
3pm EST Jan 31, 2026-6pm EST Feb 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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