Pennsylvania greets the morning with a gray, pressing sky as light flakes drift over parts of Pittsburgh, shining briefly in the streetlamps before melting on cold pavement. The air feels sharp and uneasy—an early Winter Weather Alert mindset that hints at the stronger system expected by Tuesday, when accumulating snow may complicate travel across western Pennsylvania.
Today brings scattered light snow early, followed by a rain–snow mix developing through the afternoon. Highs push into the mid-40s, but colder pockets may still produce bursts of wet snow. Meteorologists now track a more organized wave set to arrive Tuesday morning. It will cross the region as colder air deepens, creating a snow-chance window from roughly 8 a.m. until 6 p.m. and producing 1–3 inches for many neighborhoods—especially north and east of the city.
Drivers should plan added time on I-376, Route 28, and the Parkway North, where visibility can drop fast during heavier bursts. Winds may gust near 30 mph, making bridges and higher terrain especially tricky. To be fair, models vary on where the narrow band of heavier snow sets up, but all show a sharp transition to colder air as the day progresses.
By Tuesday night, skies remain mostly cloudy with lows in the lower 20s—cold enough to freeze lingering moisture and create black-ice hazards on untreated roads. Wednesday turns partly sunny but stays brisk, offering a brief reset before another disturbance approaches late in the week.
Residents returning from holiday travel should stay weather-aware through early December. This is the time of year when flash-freeze events escalate quickly, often within minutes of sunset.
Five-Day Outlook
Today: Mix of rain/snow; high 45.
Monday: Partly sunny; high 37.
Tuesday: Snow likely; 1–3″. High 36.
Wednesday: Partly sunny; high 35.
Thursday: Mostly cloudy; high 31.
