Pittsburgh, Pennsylvania – Afternoon storms could drench Pittsburgh and stall drivers on I-376 Tuesday, as the region braces for a wave of summer thunderstorms. Temperatures will climb toward 91°F before showers and scattered thunderstorms sweep through after 2 p.m., potentially bringing heavy downpours, localized flooding, and hazardous travel across Allegheny County.
According to the National Weather Service, Tuesday’s weather will stay muggy and unsettled, with the chance of storms rising through the evening. Residents are urged to monitor changing conditions, secure outdoor items, and allow extra travel time, especially if driving near rivers, low-lying roads, or construction zones along I-376 and Route 28. Keep mobile devices charged, avoid flooded roadways, and be prepared for sudden power outages as severe weather pushes through the region.
Scattered thunderstorms will linger into Tuesday night, with patchy fog forming late and overnight lows near 72°F. Wednesday brings more thunderstorm chances, especially in the afternoon, with gusty winds and intense rain possible in spots. The risk of showers and storms persists daily, keeping conditions humid and summer-like across Pittsburgh, Cranberry, and Washington, PA.
By Thursday, the mercury climbs again, with highs in the upper 80s and a 70-80% chance of afternoon thunderstorms. Showers continue Thursday night before the pattern shifts to more scattered rain and brief sun on Friday, with slightly cooler highs in the mid-80s.
What’s next? Storm chances stick around into the weekend, with unsettled weather likely Saturday and Sunday. Keep an umbrella handy and plan for outdoor flexibility — the latest NWS updates remain in effect through Sunday night.
Five-Day Forecast (TUESDAY, JULY 15TH – SUNDAY, JULY 20TH):
- Tuesday: High 91°F. Scattered thunderstorms after 2 p.m. Chance of rain 50%. Humid and hot.
- Wednesday: High 90°F. Showers and thunderstorms likely, mainly after 2 p.m. Chance of rain 70%.
- Thursday: High 87°F. Showers and storms possible, mainly after 2 p.m. Chance of rain 80%.
- Friday: High 86°F. Scattered storms, partly sunny. Chance of rain 50%.
- Saturday–Sunday: Partly sunny, chance of afternoon thunderstorms both days. Highs in the mid-80s.
