For September in Pittsburgh, pack layers like jeans, t-shirts, and a light jacket for pleasant temperatures between 53°F and 73°F. This crisp weather is perfect for taking in the stunning skyline views from Mount Washington, especially before the evening chill sets in.
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top / Short-Sleeve Top
classic tee
bottom / Jeans
straight-leg
chinos for a slightly smarter look
footwear / Waterproof Boots
ankle boots
rubber sole for traction — keep feet dry all day
outerwear / Rain Jacket
shell jacket
waterproof or DWR-treated — keep it packable
Based on typical September conditions in Pittsburgh. Weather varies year to year — check the live forecast when you're within two weeks of your trip.
September is arguably the best month to be in Pittsburgh, as the oppressive summer humidity gives way to crisp, comfortable air and an abundance of sunshine. The city is energized by the return of university students and the start of Steelers football season, creating a vibrant buzz around town. It's the perfect time for a long walk through the Oakland neighborhood or a bike ride along the riverfront trails. The primary pain point for visitors in September is being unprepared for the significant temperature drop after sunset. A perfectly warm afternoon can turn into a surprisingly chilly evening, catching anyone dressed only in shorts and a t-shirt off guard, especially while sitting in the stands for a late-season Pirates game at PNC Park.
A black blazer over an ivory blouse and pleated maxi skirt in warm rain is complete formal coverage. Black mule heels are the practical formal choice when espadrilles are off the table.
A black longline parka over a crewneck sweatshirt in warm rain has a deliberateness that works. Ivory satin mules and a cream beanie are the contrasts that make it.
A black rain jacket over ivory linen trousers refuses to look sloppy in warm rain. Espadrilles and a crochet bucket hat keep the warm-weather mood alive below the waterline.
A light wash denim jacket over a denim mini skirt makes a strong case for double denim in warm rain. The black square neck top underneath adds structure.
A blush cropped jacket over a white linen blouse and ivory wide-leg trousers refuses to look heavy in warm rain. Tortoiseshell cat-eye sunglasses are the editorial punctuation.
A white linen blazer over matching wide-leg linen trousers and a blue collarless blouse stays entirely polished through warm rain. Slide sandals and gold aviators make it feel like summer despite the drizzle.
A yellow hooded rain jacket over biker shorts and a longline tee handles warm rain with high-visibility attitude. Ivory pointed-toe mules are the surprising finishing note.
Layers are the key to comfort in September. A typical outfit includes jeans or trousers, a short-sleeved shirt, and a light jacket, fleece, or hoodie that you can easily take on or off. You might wear shorts on warmer days, but always have a warmer layer for the evening.
September is an outstanding time to visit Pittsburgh. The weather is often close to perfect, with comfortable temperatures and low humidity, and the city is full of energy. It's a favorite month for locals and visitors alike.
Comfortable closed-toe shoes like sneakers are the best option for September. They are versatile enough for warm afternoons and provide a bit more warmth for cooler evenings. Sandals may be too cold for much of the month.
September is pleasantly mild, not hot. The average high temperature is 73°F, with an average low of 53°F. This makes for warm, comfortable days and cool, crisp evenings.
Pack a mix of clothing for layering: t-shirts, long-sleeved shirts, and comfortable pants or jeans. Be sure to bring a versatile light jacket or sweatshirt. If you're a football fan, a Steelers jersey will help you fit right in.
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