Pennsylvania — Steel-gray skies hover over western Pennsylvania this morning as winter makes its presence felt. Breath hangs in the air, sidewalks crunch lightly, and thermometers struggle to climb out of the low 20s across the Pittsburgh metro.
By mid-morning Monday, sunshine briefly breaks through, but cold pavement remains locked below freezing. Temperatures rise toward the low 40s by afternoon. Light snowflakes or sprinkles may mix in after midday, especially north of downtown. While accumulations stay minimal, bridges and shaded roads could turn slick fast.
Drivers should plan extra time this afternoon and evening. Conditions may change quickly along I-376, I-79, and Route 28 as moisture increases. After sunset, rain becomes more widespread. As temperatures hover near freezing, a brief wintry mix remains possible before a full changeover.
Tonight into Tuesday, rain dominates. Highs surge toward 50 degrees Tuesday afternoon, accelerating snowmelt. Wet pavement, clogged drains, and reduced visibility could impact the morning commute. For now, flooding looks unlikely, but steady rain may slow travel.
By Wednesday, Christmas Eve brings a surprising twist. Clouds thin, temperatures climb into the mid-40s, and rain chances return late. This warmer air reduces snow risk but raises concerns for flash freezing later at night if roads dry unevenly.
Meteorologists are tracking the sharp temperature swings closely. This pattern is a classic early-winter setup. Melting during the day followed by cooling after dark can create black ice with little warning.
Take action now: keep winter gear in vehicles, slow down on wet roads, and watch for slick spots on bridges. Holiday travel increases the stakes this week.
5-Day Outlook for Pittsburgh, PA
- Monday: Cold early, high near 42; chance of sprinkles or light snow
- Tuesday: Rain likely, high near 50; wet travel conditions
- Wednesday (Christmas Eve): Partly sunny, high near 44; rain late
- Christmas Day: Rain likely, much warmer, high near 58
- Thursday: Rain continues, mild, high near 62
