By PA Weather Watch Tuesday, January 13, 2026
HARRISBURG, PA — If you are heading out for lunch or running errands this Tuesday afternoon, enjoy the mild air while it lasts. Meteorologists are warning that Pennsylvania’s brief “January Thaw” is about to come to a screeching halt, replaced by a dangerous mix of plummeting temperatures and flash-freezing roads.
A powerful cold front is currently tracking across the Midwest and is scheduled to slam into the Commonwealth late tonight, turning a rainy Tuesday evening into an icy Wednesday morning commute.
The Timeline: When the Freeze Hits
The National Weather Service indicates that the temperature drop will be “drastic and rapid,” falling nearly 20 degrees in some areas over a span of just a few hours.
- Tuesday Afternoon (Jan 13): Highs hovering in the 40s with scattered rain showers.
- Tuesday Night (Overnight): Winds shift to the northwest. Temperatures crash into the 20s. Rain transitions to wet snow.
- Wednesday Morning (Jan 14): A bitter chill sets in. Wind chills will likely feel like the single digits or teens across most of the state.
The Hazard: “Black Ice” & Slick Commutes
While this system isn’t a blockbuster nor’easter, it poses a sneaky threat: Black Ice.
Because the ground is wet from Tuesday’s rain, the rapid freeze overnight could turn roadways—particularly bridges, overpasses, and untreated side streets—into skating rinks.
Regional Outlook:
- Poconos & Endless Mountains: Expect a quick coating of 1–2 inches of snow. Visibility may drop suddenly in snow squalls along I-80 and I-81.
- Lehigh Valley & Slate Belt: A “conversational coating” on grassy surfaces is likely, but slippery roads remain the primary concern.
- Philadelphia & Suburbs: Mostly a rain-to-freeze event. Watch for slick spots on I-95 and the Blue Route (I-476) during the morning rush.
- Pittsburgh & West: Lake-effect snow bands could kick up behind the front, reducing visibility for drivers on the Turnpike.
PennDOT: “Don’t Be Complacent”
With the winter season fully underway, Pennsylvania Department of Transportation (PennDOT) officials are urging drivers not to let their guard down due to the recent mild weather.
** Essential Safety Reminders:**
- Check Your Tires: Cold air compresses tires. A 10-degree drop in temperature can mean a 1-2 PSI drop in pressure.
- Clear Your Car: Under PA law, you must remove accumulated snow and ice from your hood, trunk, and roof. Flying ice can shatter windshields behind you and carries a fine of up to $1,500 if it causes injury.
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