September weather forecast
Shernerville, PA

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Weather in September

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

Temperature

September marks a gentle change in average high-temperature, declining from August's warm 80.8°F (27.1°C) to a still moderately hot 74.1°F (23.4°C). Throughout September, Shernerville registers a consistent average low-temperature of 55.2°F (12.9°C).

Humidity

In September, the average relative humidity 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

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

Daylight

The average length of the day in September in Shernerville is 12h and 27min.
On the first day of September, 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.

Sunshine

In Shernerville, the average sunshine in September is 8.8h.

UV index

In Shernerville, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's radiation is especially intense around midday; try to stay in shade during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Shernerville in September?

In Shernerville, in September, 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. 'feels like', '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 Shernerville?

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

What is the driest month in Shernerville?

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

How much does it rain in Shernerville in September?

In September, in Shernerville, the rain falls for 12.1 days. Throughout September, 1.97" (50mm) of precipitation is accumulated.

When it does not snow in Shernerville?

In Shernerville, Pennsylvania, snow does not fall in June through September.

Does it snow in Shernerville in September?

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

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

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

What time are sunrise and sunset in September in Shernerville?

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

How long on average sun shines in September in Shernerville?

In September, the average sunshine duration is 8.8h.

What is the UV index intensity in September in Shernerville?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
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
Shernerville, PA

Average temperature in September - Shernerville, 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
Shernerville, PA

Average pressure in September - Shernerville, 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
Shernerville, PA

Average wind speed in September - Shernerville, 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
Shernerville, PA

Average humidity in September - Shernerville, 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
Shernerville, PA

Average rainfall in September - Shernerville, 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
Shernerville, PA

Average rainfall days in September - Shernerville, 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
Shernerville, PA

Average snowfall in September - Shernerville, 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
Shernerville, PA

Average snowfall days in September - Shernerville, 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
Shernerville, PA

Average daylight in September / Average sunshine in September - Shernerville, 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
Shernerville, PA

Average sunshine days in September - Shernerville, 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
Shernerville, PA

Average UV index in September - Shernerville, 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
Shernerville, PA

Average cloud cover in September - Shernerville, 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
Shernerville, PA

Average visibility in September - Shernerville, 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).

Shernerville, Pennsylvania, USA

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