September weather forecast
New Wilmington, PA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in New Wilmington, Pennsylvania, with an average temperature varying between 73.6°F (23.1°C) and 53.8°F (12.1°C).

Temperature

A moderate decline in average high-temperatures is noted in September, moving from 79.7°F (26.5°C) in August to a still warm 73.6°F (23.1°C). During the month of September, New Wilmington's nighttime temperature lowers to an average of 53.8°F (12.1°C).

Humidity

The average relative humidity in September in New Wilmington is 80%.

Rainfall

In New Wilmington, Pennsylvania, during September, the rain falls for 15.6 days and regularly aggregates up to 2.4" (61mm) of precipitation. In New Wilmington, during the entire year, the rain falls for 185.5 days and collects up to 35.51" (902mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In New Wilmington, the average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm EDT.

Sunshine

In New Wilmington, the average sunshine in September is 8.3h.

UV index

In New Wilmington, Pennsylvania, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 3 during September morphs into the following directions:
Guard yourself - Avoiding sunburn is suggested. When the Sun is at its strongest around midday, find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for New Wilmington in September?

An average high-temperature, in September, in New Wilmington, is 73.6°F (23.1°C) and the average low-temperature is 53.8°F (12.1°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 87.8°F (31°C).

What is the average humidity in September?

In September, the average relative humidity is 80%.

How much does it rain in September?

In September, the rain falls for 15.6 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September in New Wilmington?

In New Wilmington, the average day length in September is 12h and 28min.

When is the sunrise / sunset in September in New Wilmington?

On the first day of September, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.3h.

How high is the UV index in September?

In New Wilmington, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe 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
New Wilmington, PA

Average temperature in September - New Wilmington, PA
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in September: 53.8°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in September
New Wilmington, PA

Average pressure in September - New Wilmington, 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
New Wilmington, PA

Average wind speed in September - New Wilmington, PA
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in September
New Wilmington, PA

Average humidity in September - New Wilmington, PA
  • Average humidity in September: 80%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, July and August (78%).

Average rainfall in September
New Wilmington, PA

Average rainfall in September - New Wilmington, PA
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is November (2.28").

Average rainfall days in September
New Wilmington, PA

Average rainfall days in September - New Wilmington, PA
  • Average rainfall days in September: 15.6 days

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is January (10 days).

Average snowfall in September
New Wilmington, PA

Average snowfall in September - New Wilmington, PA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (8.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
New Wilmington, PA

Average snowfall days in September - New Wilmington, PA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
New Wilmington, PA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in September
New Wilmington, PA

Average sunshine days in September - New Wilmington, PA
  • Average sunshine days in September: 12.8 days

The month with the most sunshine days is September (12.8 days).
The month with the least sunshine days is February (6.3 days).

Average UV index in September
New Wilmington, PA

Average UV index in September - New Wilmington, PA
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
New Wilmington, PA

Average cloud cover in September - New Wilmington, PA
  • Average cloud cover in September: 40

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September
New Wilmington, PA

Average visibility in September - New Wilmington, PA
  • Average visibility in September: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

New Wilmington, Pennsylvania, USA

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