Philadelphia is starting Friday with fog and mist, but the gray opening should give way to partly sunny skies and a warm afternoon. Temperatures will climb from the low 70s early to around 84 degrees, with no rain expected during the day. A cooler, wetter pattern may arrive this weekend, with possible downpours in the outlook.
Fog Gives Way To A Warm Afternoon
Patchy fog may briefly reduce visibility Friday morning before clearing after daybreak. North winds will run between 5 and 10 mph, while falling humidity should make the afternoon feel more comfortable despite the summerlike high.
Saturday Cools Down Before Storms Arrive
Saturday will be partly sunny with a high near 77 degrees and northeast winds of 5 to 10 mph. Clouds will build through the day, and showers could begin after midnight Saturday night as the next system moves toward the region.
Sunday Brings The Weekend Weather Shift
The weekend outlook mentions possible downpours but does not provide Sunday precipitation probabilities or rainfall totals.
Sunday night may bring showers, mainly before 2 a.m., with a low near 65 degrees. The I-95 corridor, including Philadelphia, is part of the area discussed for Sunday and Sunday night.
Recent Rainfall Context
Comparable heavy-rain events have produced serious local impacts: According to National Weather Service Philadelphia/Mount Holly event summaries, Bucks County experienced a flash flood emergency on July 12, 2021. That record provides historical context but does not establish that Sunday's forecast setup will match the 2021 event.
Official climate records also show that August was wetter than normal in Philadelphia. The National Weather Service reported 7.44 inches of precipitation in August 2026, compared with a 4.29-inch normal. Philadelphia's Office of Emergency Management identifies flooding as the city's top hazard and advises residents to prepare for it.
Showers And Gusty Winds Linger Next Week
Monday stays mostly cloudy with a high near 72 degrees and a 50% chance of showers. Rain chances continue Tuesday through Thursday, when highs remain in the mid to upper 60s and northeast winds may reach 15 mph during the day.
No watches, warnings or advisories are posted for Philadelphia as of Friday morning. Outdoor plans look easiest Friday and Saturday, while the weekend outlook mentions possible downpours.
