Today's Weather Forecast
On Saturday, December 13, 2025, Philadelphia starts with partly cloudy skies and temperatures rising from near freezing to a high of 37°F. Winds blow at 10 mph, UV index low at 1, setting a chilly tone for the day.[1]
Precipitation ramps up to 55% by evening, transitioning to snow as the Winter Weather Advisory activates at 7 PM. Overnight lows dip to 30°F, with potential for slick conditions on roads, stairs, and sidewalks.[1]
Travelers should check road conditions via 511, slow down, and prepare for delays. Pedestrians face fall risks from ice buildup.[1]
Winter Weather Advisory Details
The advisory covers portions of southeast Pennsylvania, central and northern New Jersey, northeast Maryland, and Delaware, effective until 1 PM Sunday. Snow totals of 2-4 inches will create hazardous driving.[1]
Impacts include slippery roads requiring caution, reduced visibility, and possible power outages from heavy snow. Residents should secure outdoor items and stock essentials.[1]
December's colder-than-normal pattern, with mean temperatures 5.4°F below average, amplifies these risks amid ongoing wintry conditions.[3]
December 2025 Outlook
Philadelphia's December weather stays cold, with 3-8 rainy days and a few snowy ones, including today. Expect 73 mm rainfall and snow boots essential for exploration.[2]
Forecast shows continued lows near freezing, highs in the upper 30s to low 40s °F. Total snow over next 14 days reaches 19.5 cm, with one key event now.[2]
Warm layers, umbrellas, and vigilance against slips are advised for the month. Monitor updates for shifts in this active winter pattern.[2][3]