September weather forecast
Glendon, PA

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Weather in September

The first month of the autumn, September, is still a warm month in Glendon, Pennsylvania, with an average temperature ranging between min 55.2°F (12.9°C) and max 74.1°F (23.4°C).

Temperature

The average high-temperature slightly decreases in September, shifting from a warm 80.8°F (27.1°C) in August to a still moderately hot 74.1°F (23.4°C). In September, the nighttime temperature lowers to an average of 55.2°F (12.9°C).

Humidity

In Glendon, the average relative humidity in September is 79%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Glendon, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:28 am and sunset at 7:32 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, the UV index of 4 transforms into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

What are September temperatures?

In September, in Glendon, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 55.2°F (12.9°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in September?

In Glendon, the average relative humidity in September is 79%.

What is the driest month in Glendon?

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.97" (50mm) of precipitation.

How many days does it rain in September?

In Glendon, during September, the rain falls for 12.1 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow?

In Glendon, snow does not fall in June through September.

Does it snow in September?

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

How many hours of daylight does Glendon have in September?

The average day length in September is 12h and 27min.

What time are sunrise and sunset in September?

On the first day of September in Glendon, sunrise is at 6:28 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.8h.

How high is the UV index in September?

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk 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
Glendon, PA

Average temperature in September - Glendon, PA
  • Average high temperature in September: 74.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in September
Glendon, PA

Average pressure in September - Glendon, PA
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Glendon, PA

Average wind speed in September - Glendon, PA
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in September
Glendon, PA

Average humidity in September - Glendon, PA
  • Average humidity in September: 79%

The months with the highest relative humidity are February, October and December (81%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in September
Glendon, PA

Average rainfall in September - Glendon, PA
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Glendon, PA

Average rainfall days in September - Glendon, PA
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in September
Glendon, PA

Average snowfall in September - Glendon, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Glendon, PA

Average snowfall days in September - Glendon, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Glendon, PA

Average daylight in September / Average sunshine in September - Glendon, PA
  • Average daylight in September: 12h and 3min

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 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in September
Glendon, PA

Average sunshine days in September - Glendon, PA
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.6 days).

Average UV index in September
Glendon, PA

Average UV index in September - Glendon, PA
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Glendon, PA

Average cloud cover in September - Glendon, PA
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in September
Glendon, PA

Average visibility in September - Glendon, PA
  • Average visibility in September: 5mi

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

Glendon, Pennsylvania, USA

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