Philadelphia is waking up to a cold, soupy mess on Saturday, February 28, with temperatures stuck near 29°F and patchy freezing fog spreading farther inland. The fog, combined with leftover meltwater, is helping set the stage for slick black ice on untreated sidewalks and roads, so early drivers can expect slowed traffic, sudden slick spots, and plenty of reduced visibility.
What Officials Are Saying
The National Weather Service office in Mount Holly has a Special Weather Statement out early Saturday for patchy freezing fog and black ice, pointing to moisture from the remnant snowpack as a key ingredient. Forecasters expect the fog to lift by mid to late morning, but until then they advise slowing down, sticking with low beams, and keeping extra space between vehicles.
This Afternoon and Sunday
Once the fog burns off, Saturday shapes up nicely, with skies turning mostly sunny and afternoon highs near 52°F. Winds stay light from the south at around 0 to 5 mph, so midday errands and outdoor plans should be in good shape.
That mild stretch will not hold for long. An arctic front is expected to sweep through late Saturday night into Sunday, March 1, dragging in colder air along with a chance of light rain or snow. The best shot at a light coating, up to around an inch, is mainly north of I-78. By Sunday afternoon, colder air and gusts that could reach about 25 mph will make it feel noticeably harsher again.
Early Next Week
Monday, March 2 looks sharply colder, with highs near 33°F and lows dropping into the teens Monday night. After that chilly reset, another system arrives Tuesday, March 3, which could begin as snow or a wintry mix before changing to rain in many areas.
By Wednesday, March 4, rain and milder air return, with temperatures rebounding to around 52°F. A more significant warm-up is likely Thursday and Friday, when highs are expected to climb into the upper 50s to mid 60s.
If you are checking on someone who has to be outdoors through the ups and downs, the City of Philadelphia offers winter guidance and resources. You can also call the Homeless Outreach Hotline at 215-232-1984 for assistance.
Commute Tips
The roughest travel conditions are likely during the early Saturday commute, when freezing fog and black ice are most widespread. Fog should thin and clear by mid-morning, but leftover runoff that refreezes can still create sneaky slick patches.
Give yourself extra time out the door, use low beams in the fog, and check transit and road alerts before you leave. Keep an eye on updates from the National Weather Service in case advisories change as the morning unfolds.
