PITTSBURGH, Pennsylvania – Frost glistened on rooftops and lawns early Tuesday as clear skies and calm air settled over the city. The morning calm, though, won’t last long — western Pennsylvania is about to trade its sunshine for a stretch of soggy, unsettled weather before Halloween weekend.
According to the National Weather Service in Pittsburgh, today stays sunny and seasonable, with highs near 58°F and a light east breeze. Clouds will thicken late Wednesday, and rain develops by afternoon, marking the start of a wet 36-hour stretch across much of the region.
Rain becomes widespread Wednesday night into Thursday, with gusty winds up to 20 mph and temperatures holding in the mid-50s. Steadier showers and embedded downpours may slow travel along I-79 and I-376 through Thursday morning. By late Thursday night, the rain begins to taper as cooler, drier air filters in from the north.
Friday offers a refreshing change — partly cloudy skies, highs near 52°F, and a crisp breeze from the northwest. Evening temperatures will dip into the 40s, making it cool but comfortable for trick-or-treaters across Allegheny County and nearby suburbs.
The weekend ahead looks mixed but manageable. Saturday may bring a few spotty showers, but Sunday trends drier with sunshine returning and highs climbing back into the lower 50s. Early November’s pattern looks colder, with models hinting at the season’s first true chill — perhaps even a few flurry chances in northern Pennsylvania next week.
Five-Day Outlook for Pittsburgh, PA:
Tue: 58/37 – Frost early, sunny afternoon.
Wed: 56/45 – Cloudy, rain developing.
Thu: 56/42 – Rain likely, breezy.
Fri: 52/39 – Clearing, cool Halloween night.
Sat: 53/38 – Partly sunny, stray shower.
