Pennsylvania weather remains damp and unsettled across Pittsburgh this afternoon as low clouds hang over the Three Rivers and scattered showers begin spreading toward downtown. Wet pavement reflected gray skies late this morning along the Parkway East and I-376 while cool air held temperatures near 57 degrees at Allegheny County Airport. Drivers heading through tunnels and elevated bridges should expect slick conditions during passing showers later today.
According to the National Weather Service, showers become more likely after midafternoon with additional rain developing into tonight. Some neighborhoods across Allegheny County could pick up close to an inch of rainfall before conditions improve Monday morning. Patchy fog may also redevelop near river valleys and hilltops, reducing visibility during late-night travel.
Meteorologists are now tracking a rapid warmup heading into Tuesday and Wednesday. High temperatures climb from the upper 70s today into the middle 80s by Tuesday afternoon across Pittsburgh, Cranberry and Washington County. That sharp swing marks one of the warmest stretches western Pennsylvania has seen so far this spring.
A few isolated thunderstorms may develop Tuesday afternoon and again Wednesday as warmer, more humid air pushes northward into the Ohio Valley. Widespread severe weather is not expected, but isolated stronger storms could still produce gusty winds and brief downpours. Keep phones charged and monitor weather alerts if traveling for Memorial Day events.
Residents should allow extra travel time during heavier rain this evening, especially along Route 28, the Pennsylvania Turnpike and low-lying roads near creeks and streams. Ponding water may form quickly where repeated showers move across the same areas.
The broader eastern United States remains locked in an active spring weather pattern through Memorial Day, though longer-range outlooks favor above-normal temperatures by late next week across western Pennsylvania.
Five Day Outlook for Pittsburgh, Pennsylvania
- Memorial Day: Isolated showers early, then mostly cloudy. High near 80.
- Tuesday: Slight chance of showers and thunderstorms. High near 85.
- Wednesday: Showers and thunderstorms possible during the afternoon. High near 83.
- Thursday: Partly sunny and drier. High near 80.
- Friday: Mostly sunny with seasonable temperatures. High near 75.
