Philadelphia wakes up Wednesday under mostly cloudy skies and upper-30s chill, but it will not stay that way for long. Temperatures are expected to climb into the mid-to-upper 50s by this afternoon as a brief warm surge rolls through. That warm bump will send highs into the upper 50s today and into the low 70s on Thursday before a cold front barrels in late in the week. If you have plans Thursday evening, pencil in rain showers after dark.
Late-Week Rain And Gusts
Showers are projected to move in Thursday evening and carry into Friday morning, easing off by Friday afternoon. Most neighborhoods should pick up a few tenths of an inch of rain (about 0.25-0.5 inches), with some spots potentially seeing totals closer to 0.75 inches. A rumble of thunder is on the table, though not guaranteed. As the front pushes through, winds will strengthen, with gusts around 25-35 mph at times that could slow commutes and leave standing water on roads, according to the National Weather Service Mount Holly.
Warm Thursday, Quick Turn
Thursday will play spring for a day, with highs near 71 and southwest winds strengthening through the afternoon ahead of the front. This quick warm spike follows the earlier bout of unseasonable heat this month covered in steamy March heat. Once the front arrives Thursday night, conditions should flip in a hurry.
Marine Conditions And Boating
Out on the water, things get rougher. Coastal seas are expected to build to around 3-5 feet, while southwest winds increase to roughly 15-25 knots (about 17-29 mph) with gusts near 30 knots (around 35 mph). A Small Craft Advisory is in effect for Atlantic ocean waters from 8 a.m. Thursday through 8 a.m. Friday for zones ANZ450-455. Small-boat operators should plan to stay in port or make sure vessels and gear are well secured, and be ready for reduced visibility in rain and fog late Thursday into early Friday. Mariners should check updated marine products before heading out.
Weekend Cooldown And Travel Tips
By Friday afternoon, conditions trend drier and cooler. Saturday looks noticeably chillier, with highs stuck in the upper 40s, before a modest rebound into the mid-50s on Sunday. For anyone traveling, expect wet roads and patches of reduced visibility in heavier showers from Thursday night into Friday morning, and allow extra time on bridges and other exposed routes. It is a good idea to secure outdoor furniture and take a second look at any waterfront plans.
How To Prepare
Keep an umbrella and a wind-resistant layer within reach for Thursday night as the rain and gusts roll through, and avoid unnecessary trips on the water while the Small Craft Advisory is active. If you have to travel, check airline or transit alerts along with the latest forecast products from the NWS before you head out.
