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

13°F

-11°C

Humidity 51%
Wind Speed NW 13 mph
Barometer 30.18 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 29 Jan 9:55 pm EST
Extended Forecast for

3 Miles NNE Unionville PA

Cold Weather Advisory January 29, 10:00pm until January 30, 11:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 29, 10:00pm until January 30, 11:00am

    NOW until 11:00am Fri

    Cold Weather Advisory

  • Tonight

    Low: 1 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 16. Wind chill values as low as -8. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 16 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. Northwest wind around 5 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 19. Wind chill values as low as -10. North wind 5 to 10 mph.

    High: 19 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow, mainly after 1am. Mostly cloudy, with a low around 7. North wind 5 to 15 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 7 °F

    Chance Snow

  • Sunday

    Sunday: A slight chance of snow before 1pm. Partly sunny, with a high near 22. Chance of precipitation is 20%.

    High: 22 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 29.

    High: 29 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 1. Wind chill values as low as -8. West wind around 5 mph.
Friday
Sunny, with a high near 16. Wind chill values as low as -8. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around -1. Northwest wind around 5 mph.
Saturday
Partly sunny, with a high near 19. Wind chill values as low as -10. North wind 5 to 10 mph.
Saturday Night
A chance of snow, mainly after 1am. Mostly cloudy, with a low around 7. North wind 5 to 15 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
A slight chance of snow before 1pm. Partly sunny, with a high near 22. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 12.
Monday
Sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 29.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Thursday
A chance of snow. Partly sunny, with a high near 29. Chance of precipitation is 30%.
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Forecast Area
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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 Jan 29, 2026
Forecast Valid:
10pm EST Jan 29, 2026-6pm EST Feb 5, 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