September weather forecast
Hermitage, PA

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Weather in September

September signals the close of summer and the gradual advent of autumn in Hermitage. The diminishing daylight hours and cooling temperatures present vivid episodes of leaf color changes, creating a spectacular display throughout the city. The cooling atmosphere registers more clearly as October approaches. The regular rainfall, around 2.2" (56mm), adds to the lushness of the city's scenery—elevating the beauty of the transitioning foliage. With less humidity, the inviting autumn air makes this an excellent month for various outdoor activities.

Temperature

With the beginning of September, the average high-temperature shows a small decrease, transitioning from a warm 79.3°F (26.3°C) in August to a still moderately hot 73.4°F (23°C). Hermitage, during the month of September, experiences an average low-temperature of 53.8°F (12.1°C).

Humidity

The average relative humidity in September is 80%.

Rainfall

September is the month with the least rainfall. Rain falls for 15.5 days and accumulates 2.2" (56mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:04 pm EDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Hermitage in September?

The average high-temperature and low-temperature during September are 73.4°F (23°C) and 53.8°F (12.1°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in July is computed to be 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 80%.

What is the driest month?

The month with the least rainfall in Hermitage is September, when the rain falls for 15.5 days and typically collects 2.2" (56mm) of precipitation.

How many days does it rain in September?

In Hermitage, in September, it is raining for 15.5 days, with typically 2.2" (56mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 28min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:04 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.3h.

What is the UV index intensity in September?

In Hermitage, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Hermitage, PA

Average temperature in September - Hermitage, PA
  • Average high temperature in September: 73.4°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in September: 53.8°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in September
Hermitage, PA

Average pressure in September - Hermitage, 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
Hermitage, PA

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

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).

Average humidity in September
Hermitage, PA

Average humidity in September - Hermitage, PA
  • Average humidity in September: 80%

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

Average rainfall in September
Hermitage, PA

Average rainfall in September - Hermitage, PA
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in September
Hermitage, PA

Average rainfall days in September - Hermitage, PA
  • Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in September
Hermitage, PA

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

The month with the highest snowfall is January (8.62").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Hermitage, PA

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

The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Hermitage, 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 month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in September
Hermitage, PA

Average sunshine days in September - Hermitage, PA
  • Average sunshine days in September: 12.7 days

The month with the most sunshine days is September (12.7 days).
The month with the least sunshine days is February (6 days).

Average UV index in September
Hermitage, PA

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

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
Hermitage, PA

Average cloud cover in September - Hermitage, PA
  • Average cloud cover in September: 40

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

Average visibility in September
Hermitage, PA

Average visibility in September - Hermitage, 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).

Hermitage, Pennsylvania, USA

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