Pittsburgh, Pennsylvania – A line of scattered thunderstorms is set to sweep into the Pittsburgh region after 2 p.m. Sunday, bringing a sharp change to weekend plans and a renewed risk for slick roads across Allegheny County. Motorists traveling Route 51, I-376, or through South Hills neighborhoods should prepare for rapidly changing conditions and localized downpours that could slow traffic.
According to the National Weather Service, showers and possibly a thunderstorm will develop after midday, with the highest risk of heavy rain and thunder between 2 and 8 p.m. Sunday. The chance of precipitation is 90 percent, and brief periods of intense rainfall could create standing water on area roadways. Residents are advised to avoid unnecessary travel during storms and check local alerts for any updates on possible flash flooding.
The unsettled weather will push temperatures to a muggy 88°F Sunday before storms move out by late evening. The threat of severe weather will ease overnight, leading to drier and clearer conditions for the start of the workweek. Monday brings a mix of sunshine and isolated afternoon storms with highs near 88°F, while Tuesday will turn sunny, hot, and humid with highs soaring to 91°F.
With more showers possible Wednesday and Thursday, Pittsburghers should keep umbrellas and rain gear handy. If you rely on public transit or commute via local highways, build in extra time for travel delays, especially during afternoon and evening hours. Power outages and minor flooding are possible where storms linger.
Five-Day Pittsburgh Forecast:
- Sunday: Scattered thunderstorms after 2 p.m., high 88°F.
- Monday: Isolated afternoon storms, patchy morning fog, high 88°F.
- Tuesday: Sunny and hot, high 91°F.
- Wednesday: Showers and storms likely after 2 p.m., high 92°F.
- Thursday: Showers and storms likely, partly sunny, high 90°F.
