September weather forecastFernway, PA

September

Weather in September

The first month of the autumn, September, is still a warm month in Fernway, Pennsylvania, with an average temperature varying between 54.7°F (12.6°C) and 74.3°F (23.5°C).

Temperature

In the transition to September, Fernway observes a minor drop in the average high-temperature, shifting from 80.8°F (27.1°C) in August to a still warm 74.3°F (23.5°C). September nights in Fernway cool down to an average low-temperature of 54.7°F (12.6°C).

Humidity

The average relative humidity in September is 79%.

Rainfall

In Fernway, in September, it is raining for 15.4 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 184.5 rainfall days, and 36.54" (928mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:48 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:03 pm EDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

In Fernway, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 4 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Updated: Aug 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Fernway in September has an average high-temperature of 74.3°F (23.5°C) and an average low-temperature of 54.7°F (12.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is estimated at 86°F (30°C).

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

In Fernway, in September, during 15.4 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

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

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

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

On the first day of September, sunrise is at 6:48 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:03 pm EDT.

In Fernway, the average sunshine duration in September is 8.3h.

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

80.8°F

74.3°F

61°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph

5.5mph

7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.2

12.5

12.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Fernway, PA

Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.8°F).

Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Fernway, 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 (29.94"Hg).

Average wind speed in September
Fernway, PA

Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Fernway, PA

Average humidity in September: 79%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in September
Fernway, PA

Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is April (3.82").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in September
Fernway, PA

Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is May (20.6 days).
The month with the least rainy days is January (10.3 days).

Average snowfall in September
Fernway, PA

Average snowfall in September: 0"

The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Fernway, PA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 30min

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 18min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).