Pittsburgh, Pennsylvania – The morning fog is slowly lifting across western Pennsylvania, revealing damp pavement and increasingly humid air. While the day begins quietly, the atmosphere is expected to become more unstable through the afternoon, setting the stage for thunderstorms that could bring damaging wind gusts, heavy rain, and slower travel across the Pittsburgh region.
According to the National Weather Service in Pittsburgh, patchy fog will give way to partly sunny skies before scattered showers and thunderstorms develop later today. The Hazardous Weather Outlook warns that if storms form during the afternoon, they could organize into clusters capable of producing localized damaging downburst winds, with the greatest concern extending into eastern Ohio. Forecasters also note that repeated thunderstorms through Tuesday could produce localized flash flooding in poor-drainage and low-lying areas.
Drivers along Interstates 79, 376, 279, the Pennsylvania Turnpike (I-76), and Route 28 should prepare for rapidly changing conditions late in the day. Brief downpours may sharply reduce visibility, while gusty winds could bring down small tree limbs or create isolated debris on roadways. Travelers using Pittsburgh International Airport should also monitor airline updates for possible weather-related delays.
Today’s high reaches 88 degrees, with only a 30% chance of storms, but rain coverage increases tonight and Tuesday. Tuesday carries a 60% chance of showers and thunderstorms, making it the wettest day in the current outlook. While widespread severe weather is not guaranteed, a few stronger storms could produce damaging wind gusts, frequent lightning, and isolated hail. The tornado threat remains low, but it is not zero in stronger storm environments.
Conditions begin improving Wednesday as rain becomes more scattered before drier air arrives Thursday. Sunshine returns with highs in the lower 80s, and the Climate Prediction Center’s 6-to-10-day outlook favors above-normal temperatures across the Upper Ohio Valley into early next week.
Five-Day Forecast for Pittsburgh, Pennsylvania
- Today: High 88°F. Patchy fog early, then a chance of afternoon showers and thunderstorms. 30% chance of rain.
- Tonight: Low 69°F. Showers and thunderstorms become likely. 60% chance of rain.
- Tuesday: High 82°F. Showers and thunderstorms likely. 60% chance of rain.
- Tuesday Night: Low 65°F. Chance of showers. 30% chance of rain.
- Wednesday: High 79°F. Partly sunny with a chance of showers and afternoon thunderstorms. 30% chance of rain.
