Pittsburgh, Pa. – Drivers heading into Saturday morning could face thick patchy fog across Pittsburgh and surrounding counties, slowing travel ahead of Labor Day weekend. Conditions may cause delays along I-376, I-79, and neighborhood roadways until late morning.
According to the National Weather Service, fog is most likely before 8 a.m. Saturday, reducing visibility across Allegheny County. Skies will quickly turn sunny by late morning, pushing afternoon highs near 75 degrees. Officials urge drivers to use headlights, reduce speed, and allow extra travel time during the early commute hours.
By Sunday, warm and dry air will dominate western Pennsylvania, with sunny skies and a high near 78 degrees. The trend continues into Labor Day Monday when temperatures rise into the low 80s, ideal for outdoor gatherings, parades, and holiday travel. Nights remain cool with lows dipping into the upper 40s and lower 50s, offering comfortable sleeping weather without the need for air conditioning.
The first half of next week looks calm but will begin to shift. Tuesday should stay mostly sunny with highs near 81. Clouds build by Wednesday, bringing a 30% chance of showers during the day and into Wednesday night. By Thursday, rain chances climb to 50%, with highs in the mid-70s, signaling a wetter pattern returning midweek.
Travelers should remain cautious during Saturday morning’s fog, but the majority of the holiday weekend will deliver favorable outdoor weather. More updates are expected as midweek showers approach.
Five-Day Forecast for Pittsburgh, Pa.
- Saturday: Patchy fog early, then sunny. High 75, low 51.
- Sunday: Sunny. High 78, low 54.
- Labor Day Monday: Sunny. High 81, low 57.
- Tuesday: Mostly sunny. High 81, low 58.
- Wednesday: Chance of showers. High 80, low 63.
