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

Accumulating Snow Expected Saturday Night into Sunday Morning

A storm system will bring accumulating snow across the region Saturday night through Sunday morning, followed by bitter cold temperatures into early next week. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Philadelphia - Wings Field Airport (KLOM)

Lat: 40.14°NLon: 75.27°WElev: 282ft.

Overcast

32°F

0°C

Humidity 79%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 13 Dec 8:55 pm EST
Extended Forecast for

Gwynedd PA

Winter Storm Warning until December 14, 01:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until December 14, 01:00pm

    NOW until 1:00pm Sun

    Winter Storm Warning

  • Tonight

    Low: 24 °F

    Heavy Snow

  • Sunday

    Sunday: A chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 28. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.

    High: 28 °F

    Chance Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 14. Wind chill values as low as -1. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 28. West wind around 10 mph, with gusts as high as 20 mph.

    High: 28 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16. Southwest wind around 5 mph.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Low around 24. West wind around 5 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 7 inches possible.
Sunday
A chance of snow, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 28. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Sunday Night
Mostly clear, with a low around 14. Wind chill values as low as -1. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Increasing clouds, with a high near 28. West wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 16. Southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Partly sunny, with a high near 50.
Thursday Night
Rain likely. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 24.
Saturday
A chance of rain. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gwynedd PA
 40.21°N 75.25°W (Elev. 397 ft)
Last Update:
4:57 pm EST Dec 13, 2025
Forecast Valid:
9pm EST Dec 13, 2025-6pm EST Dec 20, 2025
 
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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