Typical Weather in Pittsburgh, PA in September
75° F Avg High
58° F Avg Low
7 Rainy Days
☀️ Temperature Summary
September is a popular time to visit, with an inviting climate featuring warm temperatures. September is one of the warmer months of the year for Pittsburgh, with highs averaging around 75°F. You can expect overnight lows near 58°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 79°F and 70°F.
September is a great time to visit Pittsburgh, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 23% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 3 inches.
Rainfall Throughout the Year
Planning a trip to Pittsburgh? Try our free trip weather planner