Philadelphia started Monday, April 13, 2026, on the gray and cool side at about 54°F, but the city will not stay that way for long. A sharp warm-up and gusty southwest winds are on tap this afternoon, pushing highs near 82°F with gusts reaching 25 to 30 mph.
Forecast Highlights
Forecasters at the National Weather Service in Mount Holly say today's mix of recovering dry air and stiff southwest breezes brings an elevated risk for fire spread across the region. Expect southwest winds of 10 to 15 mph with gusts up to 30 mph this afternoon, while humidity drops into the mid 30s to around 50 percent.
The same pattern sets the stage for an early taste of summer later this week. Potentially record-challenging warmth could push afternoon highs into the upper 80s and near 90°F on Wednesday, April 15, 2026, and Thursday, April 16, 2026, according to NWS Mount Holly.
Marine And Commute Notes
A Small Craft Advisory is in effect for the Atlantic coastal waters from about 8 a.m. Monday, April 13, through roughly 1 a.m. Tuesday, April 14. Seas are expected to build to 4 to 6 feet with southerly winds gusting near 20 to 25 knots. Conditions on Delaware Bay should stay below advisory levels, but gusts around 20 knots this afternoon could still make things choppy, so smaller boats are better off skipping nonessential trips.
On land, those same afternoon gusts may scatter loose yard debris and give cyclists and drivers of high-profile vehicles a tougher ride home during the evening commute.
What To Do
Skip outdoor burning and yard debris fires today, and take a minute to secure patio furniture, trash cans, and any lightweight signage before the wind ramps up. If you have plans on the water, consider rescheduling or sticking to larger, well-equipped vessels and check local marine advisories for the latest updates.
For more context on the bone-dry breeze and fast-moving fire concerns, see our Philly on edge for fast-moving fires.
