Average temperatures for September at cities, communities and other locations throughout Pennsylvania are listed below in degrees Fahrenheit and Celsius.

Temperatures. The average maximum daytime temperatures vary from pleasant in Mount Pocono at 21°C to warm in Philadelphia at 26°C. Nighttime temperatures ...

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.

In Philadelphia, the average temperature for September is around 69°F (20.5°C), with highs reaching up to approximately 77.5°F (25.3°C) and lows dropping to ...

Daytime high temperatures tend to average near 81-82 F (27-28 C) early in September, cooling down to around 73-75 F (23-24 C) near the end of the month. You ...

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

The average temperature in Philadelphia, Pennsylvania in September is warm at 20.1 °C (68.18 °F). · Afternoons can be fairly hot with average high temperatures ...

What's The Average High Temp in Pennsylvania? 62.7 °F ; What's the Average Low in Pennsylvania? 44.3 °F ; What's the Average Temperature in Pennsylvania? 53.5 °F.

The weather in Philadelphia in September is pleasantly warm and breezy, with average highs of 80°F (27°C) and lows of 60°F (15°C).