Pittsburgh, Pa. – Drivers across western Pennsylvania could face slowdowns Friday morning as patchy fog settles over parts of Allegheny County before sunrise. Visibility may be reduced along major routes including I-376 and I-79, creating hazards for commuters starting the day.
According to the National Weather Service in Pittsburgh, fog should clear by mid-morning Friday, leaving behind a sunny day with highs near 84 degrees. Calm winds and dry conditions will help keep roads safe by midday, but travelers should allow extra time early.
The weekend brings more classic September weather, with highs in the low to mid-80s and cooler nights dipping into the 50s. Saturday looks mostly sunny, though light sprinkles are possible late Saturday night into Sunday morning. By Sunday afternoon, most of the region will turn sunny again, keeping outdoor plans largely unaffected.
Warmth continues into early next week, with highs in the low 80s Monday through Wednesday under mostly clear skies. Nights remain comfortable, with lows between 55 and 58 degrees, ideal for evening events or open-window sleeping.
Residents are encouraged to use caution during Friday’s morning fog, especially in low-lying areas and valleys where visibility may drop quickly. Motorists should keep headlights on low beam and increase following distance.
Conditions remain stable beyond Sunday, with no major weather systems expected until midweek. The pleasant stretch makes this one of the last warm weekends of the season before fall weather patterns set in.
Five Day Forecast for Pittsburgh, Pa.
- Friday: Patchy morning fog, then sunny. High 84. Low 55.
- Saturday: Mostly sunny. High 84. Low 62. Chance of sprinkles overnight.
- Sunday: Mostly sunny, sprinkles before 2 p.m. High 85. Low 58.
- Monday: Mostly sunny. High 83. Low 56.
- Tuesday: Sunny skies continue. High 83. Low 57.
