Philadelphia, Pennsylvania – Another surge of cold air is settling across eastern Pennsylvania, New Jersey, and Delaware tonight, with wind chill values falling to near zero in many areas by Monday morning and affecting travel along major corridors including Interstate 95, Interstate 76, and U.S. Route 1.
According to the National Weather Service office in Philadelphia/Mount Holly, overnight temperatures will drop into the single digits and teens, with wind chills making it feel even colder through the early morning hours. These conditions follow a prolonged stretch of winter weather that has left many roadsides and neighborhoods covered in packed snow and ice.
Despite the cold start, forecasters say Monday is expected to be the warmest day in over a week, with highs climbing to near 30 degrees under mostly sunny skies. While this will provide limited daytime relief, temperatures will remain near or just below freezing for much of the region.
The National Weather Service notes that Tuesday offers the best chance this week for temperatures to rise above freezing, particularly near and southeast of the I-95 corridor. This brief moderation may begin to reduce snow cover; however, melting is expected to be slow due to a thick layer of sleet and ice beneath the snowpack in many locations.
Forecasters caution that even as daytime temperatures improve, refreezing will remain a concern at night. Meltwater can refreeze on untreated surfaces, creating slick conditions during evening and early morning hours, especially on bridges, overpasses, and shaded roads.
Wind chills near zero pose a risk for frostbite with prolonged exposure, particularly for early commuters, students, and outdoor workers. Residents are urged to dress in layers, limit time outdoors during the coldest periods, and check on vulnerable individuals.
While a gradual improvement is expected later in the week once temperatures rise well above freezing, officials stress that winter hazards will persist until sustained warmth arrives across the region.
