Pennsylvania’s warm, quiet stretch is about to flip, with dry roads and sunshine giving way to gusty storms by Saturday afternoon. Drivers across Pittsburgh may notice calm, bright skies now, but conditions will shift quickly after midday tomorrow as showers build in.
According to the National Weather Service in Pittsburgh, today stays mostly sunny with a high near 78°F and light winds. That changes Saturday after 2 p.m., when showers and thunderstorms develop with a 70% chance of rain, increasing to 90% by evening . Some storms may produce wind gusts near 30 mph, small hail, and heavy downpours that reduce visibility on major routes like I-376 and I-79.
Across Allegheny, Westmoreland, and Beaver counties, roads could turn slick by late afternoon Saturday. Brief downpours may create ponding in low-lying areas and along urban streets. Keep headlights on and allow extra braking distance during heavier bursts.
Rain continues into Sunday with cooler air settling in. Highs drop sharply to near 54°F, and breezy winds make it feel even colder. By early Monday, skies clear but temperatures fall to around 49°F, then plunge to near 32°F Monday night. Patchy frost could form by early Tuesday, especially outside the city.
Plan errands early Saturday before storms arrive. Secure outdoor items ahead of gusty winds, and prepare for a quick wardrobe change as colder air moves in.
Five Day Forecast for Pittsburgh, Pennsylvania:
Today: Mostly sunny, high near 78°F
Saturday: Showers likely after 2 p.m., high near 84°F
Sunday: Showers likely, high near 54°F
Monday: Mostly sunny, high near 49°F
Tuesday: Mostly sunny, high near 69°F
