Pittsburgh, Pennsylvania – Gray clouds are beginning to gather beyond the skyline this Sunday afternoon, signaling a dramatic shift from today’s pleasant weather. While much of western Pennsylvania is enjoying comfortable temperatures and dry conditions, a soaking rain event is lining up for the start of the workweek.
According to the National Weather Service in Pittsburgh, Sunday will remain largely dry with increasing clouds and temperatures reaching around 82 degrees. Light winds and seasonable conditions will make for a favorable afternoon across Allegheny County and much of western Pennsylvania.
The weather story changes quickly Sunday night.
Meteorologists are tracking a developing system that will bring widespread showers and possible thunderstorms into the region. Rain chances surge from 40 percent Sunday evening to 90 percent by Monday, making Monday the wettest period in the current outlook.
Latest forecast data suggests rainfall amounts between one-half inch and one inch are possible from late Sunday night through Monday evening. Locally higher totals could occur where thunderstorms develop.
Drivers along Interstate 376, Interstate 79, Interstate 279, Route 28 and the Parkway West should prepare for slower travel Monday. Wet pavement, reduced visibility and standing water in low-lying areas may create difficult driving conditions during both the morning and afternoon commute periods.
While widespread severe weather is not currently expected, thunderstorms can still produce brief gusty winds, lightning and heavy downpours. Tornado risk appears low at this time, but residents should remain weather-aware as the system approaches.
Plan outdoor activities and yard work for Sunday while conditions remain favorable. By Monday afternoon, umbrellas and rain gear will likely become essential across the Pittsburgh metro area.
Conditions gradually improve Tuesday with mostly sunny skies returning and temperatures near 79 degrees. Sunshine becomes more widespread Wednesday as highs climb back toward 80 degrees.
Long-range outlooks continue to favor warmer-than-normal temperatures heading into late next week, bringing stronger summer vibes back to western Pennsylvania after this brief wet pattern.
Traveling Monday or seeing rain arrive in your neighborhood? Let us know what conditions look like across the Pittsburgh area.
Five Day Forecast for Pittsburgh, Pennsylvania
Sunday: Increasing clouds. High near 82°F.
Sunday Night: Showers developing with possible thunderstorms after 2 a.m. Low around 63°F. Chance of rain 90%.
Monday: Showers and possible thunderstorms. High near 78°F. Chance of rain 90%.
Monday Night: Showers likely, then scattered showers late. Low around 59°F. Chance of rain 60%.
Tuesday: Mostly sunny. High near 79°F.
Wednesday: Sunny and pleasant. High near 80°F.
