Pittsburgh Weather in September

September in Pittsburgh sees daytime temperatures around 24°C (75°F) and lows of 13°C (55°F) at night. With around 78 mm (3.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Pittsburgh in September

Looking at the last 30 years, the data shows about 11 days with rain, averaging 78 mm (3.1 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Pittsburgh in September

Weather in Pittsburgh is at its perfect in September. Highs reach 24°C (75°F), while nights settle around 13°C (55°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Pittsburgh in September

Enjoy a sunny month with about 197 hours of sunshine, the clear skies make Pittsburgh even more beautiful.

Wind Speed in Pittsburgh in September

September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Pittsburgh's climate page.

Pittsburgh Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 35%  

Precipitation 78 mm (3.1 in)  

Rainy days 11 days  

Humidity 72%  

Windspeed 3 m/s (6 knots)  

Sunshine 197 hours  

Percentage Sunshine 53%  

What to Wear in Pittsburgh in September

For Pittsburgh in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Pittsburgh in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Pittsburgh's climate page.

More climate data for Pittsburgh

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Pittsburgh climate overview or explore weather in the United States of America.