Get the monthly weather forecast for Pittsburgh, PA, including daily high/low, historical averages, to help you plan ahead.

In Pittsburgh during September average daily high temperatures decrease from 79°F to 69°F and it is overcast or mostly cloudy about 36% of the time.

The weather in Pittsburgh in September is pleasantly warm and humid but cool, with average highs of 80°F (26°C) and lows of 56°F (13°C).

The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily. High Temperature 24°C 75°F

Pittsburgh September Weather ; Average daily high, 75.3 °F ; Average daily low, 55.0 °F ; Average monthly precipitation, 3.3 inches ; Average monthly snow, none.

Daily high temperatures decrease by 10°F, from 79°F to 68°F, rarely falling below 57°F or exceeding 86°F.

The temperatures in Pittsburgh in September are comfortable with low of 57°F and and high up to 77°F. You can expect about 3 to 8 days of rain in Pittsburgh ...

September weather in Pittsburgh for each year since 2010 including high and low temperatures and total amount of rain.

The temperature reaches around 25℃ during the daytime in September, falling away to 14℃ at night. The UV index will be moderate at this time of year, so not ...

Check accurate weather in September in Pittsburgh (PA). Expect Pittsburgh September temperature around 24°C (76°F). Read clothing tips & recommended ...