Pennsylvania – Low clouds hang over the valleys this morning, creating a muted, gray December backdrop as colder air continues sliding into western Pennsylvania. Light wind brushes across rooftops and parking lots, hinting at a sharper winter feel ahead of a strengthening system expected to pass through the region this weekend. Even early flurries may stick fast on untreated roads as temperatures dip into the 20s.
According to the National Weather Service, a Saturday evening disturbance will bring isolated snow showers during the day, followed by a more organized burst of snow Saturday night into Sunday. Confidence is growing that 2–4 inches could accumulate in parts of Allegheny County and surrounding higher terrain. Meteorologists warn that travel could deteriorate quickly as temperatures fall through the evening, increasing the chance for flash-freeze slick spots on bridges, ramps, and shaded stretches of I-79, I-376, and the Parkway East.
By Sunday morning, scattered snow showers linger with highs stuck near 21°F—a true December cold snap that may produce wind chills in the single digits across the ridges. Visibility could drop fast in heavier bands, especially north and east of the city where lake-enhanced snow may re-energize.
Residents should plan extra time for weekend errands and holiday travel. The combination of accumulating snow and the region’s steep hills can create sudden braking challenges, and conditions may deteriorate faster than expected after sunset Saturday. Keep gloves, hats, and an ice scraper ready; winter weather is taking a firmer hold.
Five-Day Outlook
• Saturday: High 35°F, isolated snow showers; snow increasing late.
• Saturday Night: Snow showers likely. Up to 2 inches possible.
• Sunday: Scattered snow showers, high 21°F.
• Monday: Mostly cloudy, high 22°F.
• Tuesday: Partly sunny, high 33°F.
