September weather forecast
Ardmore, PA

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Weather in September

The first month of the autumn, September, is still a warm month in Ardmore, Pennsylvania, with an average temperature fluctuating between 76.5°F (24.7°C) and 59.9°F (15.5°C).

Temperature

A subtle change in temperatures is noted as August gives way to September, with average highs reducing from 83.7°F (28.7°C) to a still warm 76.5°F (24.7°C). Ardmore throughout September, experiences an average nighttime temperature of 59.9°F (15.5°C).

Humidity

In Ardmore, the average relative humidity in September is 75%.

Rainfall

In Ardmore, during September, the rain falls for 10.1 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 111.8 rainfall days, and 9.69" (246mm) of precipitation is accumulated.

Snowfall

In Ardmore, snow does not fall in April through October.

Daylight

In Ardmore, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:29 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.

Sunshine

In Ardmore, the average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Ardmore in September?

An average high-temperature, in September, in Ardmore, is 76.5°F (24.7°C) and the average low-temperature is 59.9°F (15.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 89.6°F (32°C).

What is the average humidity in September?

In Ardmore, Pennsylvania, the average relative humidity in September is 75%.

How much does it rain in September?

In Ardmore, in September, it is raining for 10.1 days, with typically 0.63" (16mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Ardmore have in September?

In Ardmore, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September in Ardmore?

On the first day of September, sunrise is at 6:29 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 many hours of sunshine does Ardmore have in September?

The average sunshine duration in September is 8.6h.

How high is the UV index in September?

In Ardmore, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Ardmore, PA

Average temperature in September - Ardmore, PA
  • Average high temperature in September: 76.5°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 (36.7°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in September
Ardmore, PA

Average pressure in September - Ardmore, PA
  • Average pressure in September: 30.05"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
Ardmore, PA

Average wind speed in September - Ardmore, PA
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Ardmore, PA

Average humidity in September - Ardmore, PA
  • Average humidity in September: 75%

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

Average rainfall in September
Ardmore, PA

Average rainfall in September - Ardmore, PA
  • Average rainfall in September: 0.63"

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in September
Ardmore, PA

Average rainfall days in September - Ardmore, PA
  • Average rainfall days in September: 10.1 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in September
Ardmore, PA

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

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Ardmore, PA

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

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Ardmore, 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 24min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Ardmore, PA

Average sunshine days in September - Ardmore, PA
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

Average UV index in September
Ardmore, PA

Average UV index in September - Ardmore, PA
  • Average UV index in September: 5

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

Average cloud cover in September
Ardmore, PA

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

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Ardmore, PA

Average visibility in September - Ardmore, PA
  • Average visibility in September: 6mi

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

Ardmore, Pennsylvania, USA

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