Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Donora, PA

The first month of the autumn, September, is still a warm month in Donora, Pennsylvania, with average temperature fluctuating between 78.6°F (25.9°C) and 55.4°F (13°C).


In September, the average high-temperature slightly decreases, from 84.6°F (29.2°C) in August, to a still warm 78.6°F (25.9°C). The average low-temperature, is 55.4°F (13°C).


During September, Donora regularly aggregates up to 2.9" (74mm) of precipitation. During the entire year, Donora aggregates up to 37.3" (947mm) of precipitation.


The average length of the day in September is 12.4h.

What is the temperature in September in Donora?

The average high-temperature, in September, is 78.6°F (25.9°C), while the average low-temperature is 55.4°F (13°C).

How much does it rain in Donora in September?

In Donora, in September, 2.9" (74mm) of precipitation is typically accumulated.

How many hours of daylight does Donora have in September?

The average length of the day in September in Donora is 12.4h.
Average temperature in September - Donora, PA
  • Average high temperature in September: 78.6°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average rainfall in September - Donora, PA
  • Average rainfall in September: 2.9"

Wettest months (with the highest rainfall) are May and June (3.8").
The driest month (with the lowest rainfall) is February (2.2").

Average daylight in September - Donora, PA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).