September weather forecast
East McKeesport, PA

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Weather in September

September, the first month of the autumn in East McKeesport, is still a warm month, with an average temperature fluctuating between 75.4°F (24.1°C) and 55°F (12.8°C).

Temperature

The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 81.7°F (27.6°C) in August to a still moderately hot 75.4°F (24.1°C). Throughout the September nights, East McKeesport encounters a low-temperature of 55°F (12.8°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

In East McKeesport, during September, the rain falls for 12.2 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, in East McKeesport, there are 151 rainfall days, and 20.39" (518mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In East McKeesport, Pennsylvania, the average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 6:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:02 pm EDT.

Sunshine

In East McKeesport, the average sunshine in September is 8.6h.

UV index

In East McKeesport, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, a regular UV index of 4 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

East McKeesport in September has an average high-temperature of 75.4°F (24.1°C) and an average low-temperature of 55°F (12.8°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is evaluated at 87.8°F (31°C).

What is the average humidity in September?

In East McKeesport, the average relative humidity in September is 77%.

How many days does it rain in September?

In East McKeesport, during September, the rain falls for 12.2 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow?

June through September are months without snowfall in East McKeesport.

Does it snow in September?

In East McKeesport, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does East McKeesport have in September?

In East McKeesport, the average day length in September is 12h and 27min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:02 pm EDT.

How many hours of sunshine does East McKeesport have in September?

In East McKeesport, the average sunshine duration in September is 8.6h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
East McKeesport, PA

Average temperature in September - East McKeesport, PA
  • Average high temperature in September: 75.4°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in September: 55°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in September
East McKeesport, PA

Average pressure in September - East McKeesport, PA
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
East McKeesport, PA

Average wind speed in September - East McKeesport, PA
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
East McKeesport, PA

Average humidity in September - East McKeesport, PA
  • Average humidity in September: 77%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).

Average rainfall in September
East McKeesport, PA

Average rainfall in September - East McKeesport, PA
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.06").

Average rainfall days in September
East McKeesport, PA

Average rainfall days in September - East McKeesport, PA
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in September
East McKeesport, PA

Average snowfall in September - East McKeesport, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
East McKeesport, PA

Average snowfall days in September - East McKeesport, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
East McKeesport, PA

Average daylight in September / Average sunshine in September - East McKeesport, PA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in September
East McKeesport, PA

Average sunshine days in September - East McKeesport, PA
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.1 days).

Average UV index in September
East McKeesport, PA

Average UV index in September - East McKeesport, PA
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
East McKeesport, PA

Average cloud cover in September - East McKeesport, PA
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in September
East McKeesport, PA

Average visibility in September - East McKeesport, PA
  • Average visibility in September: 5mi

The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).

East McKeesport, Pennsylvania, USA

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