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

September weather forecast and climate
Downingtown, PA

The first month of the autumn, September, is also a moderately hot month in Downingtown, Pennsylvania, with average temperature ranging between max 78.8°F (26°C) and min 53.6°F (12°C).

Temperature

In September, the average high-temperature decreases, from a hot 89.6°F (32°C) in August, to a moderately hot 78.8°F (26°C). In September, the average low-temperature is 53.6°F (12°C).

Rainfall

In Downingtown, 3.7" (94mm) of precipitation is typically accumulated. During the entire year, Downingtown aggregates up to 45.8" (1164mm) of precipitation.

Daylight

In Downingtown, the average length of the day in September is 12.4h.

What is the temperature in September in Downingtown?

The average high-temperature, in September, is 78.8°F (26°C), while the average low-temperature is 53.6°F (12°C).

How much does it rain in Downingtown in September?

In Downingtown, in September, 3.7" (94mm) of precipitation is typically accumulated.

What is the average length of the day in September in Downingtown?

In Downingtown, the average length of the day in September is 12.4h.
Average temperature in September - Downingtown, PA
  • Average high temperature in September: 78.8°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (51.8°F).

  • Average low temperature in September: 53.6°F

The month with the highest average low temperature is June (68°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

Average rainfall in September - Downingtown, PA
  • Average rainfall in September: 3.7"

Wettest months (with the highest rainfall) are June and August (4.5").
Driest months (with the lowest rainfall) are February, October and November (3.3").

Average daylight in September - Downingtown, 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).