Snow likely this weekend in southeastern Pennsylvania, National Weather Service says

Southeastern Pennsylvania is poised to receive its first measurable snowfall of the season this weekend, as cold air and an advancing weather system push snow into the region late Saturday night and into Sunday morning, according to the National Weather Service. 

Snow is expected to begin in the overnight hours Saturday, likely after 10 p.m. in the Philadelphia area, including Montgomery and Bucks counties, before tapering off by mid-morning Sunday, local forecasts indicate, per 6abc Philadelphia. Early estimates from meteorologists suggest widespread snow totals of 1 to 4 inches across the region, with the higher end of that range possible in some suburbs and outlying areas. 

National forecasters from outlets including AccuWeather say the snow could be widespread by early Sunday, with accumulation — if the storm tracks as currently modeled — typical for a fast-moving winter system affecting the Mid-Atlantic, per news reports.  

The NWS forecast for the area shows a high chance of snow late Saturday night, particularly after 1 a.m., with mostly cloudy conditions and temperatures cold enough for accumulation. A chance of lighter snow continues into the late morning hours Sunday before skies gradually begin to clear. 

Forecast timing and totals

• Late Saturday night (10 p.m.–1 a.m.): Snow likely begins, first flakes expected.  
• Sunday morning: Snow continues, then tapers off by 9 a.m.
• Snowfall totals: Generally 1–4 inches across Montgomery and Bucks counties, with variability depending on storm track and moisture. 

Travel and impact considerations

Any snow that falls late Saturday night into Sunday morning could create slick spots on roads, especially on untreated surfaces, as temperatures are forecast to remain near or below freezing through the event. While this system is not expected to bring a major blizzard, measurable snow early in the winter season can still lead to slippery conditions for commuters and residents heading out late at night or Sunday morning. 

Broader pattern

This potential snowfall comes amid a pattern of below-normal early winter temperatures and sporadic winter storms in the region. Philadelphia and the surrounding area have not yet seen significant snow this season, continuing a trend of delayed first snowfall compared with historical averages.

Officials and residents are encouraged to monitor updates from the National Weather Service at weather.gov/phi through the weekend, as timing and snow amounts remain somewhat dependent on storm track and temperature changes close to the onset of precipitation.