September weather forecastKittanning, PA

September

Weather in September

The first month of the autumn, September, is still a warm month in Kittanning, Pennsylvania, with an average temperature varying between 74.3°F (23.5°C) and 54°F (12.2°C).

Temperature

The arrival of September is marked by a minor reduction in average high-temperature, sliding from 80.4°F (26.9°C) in August to a still warm 74.3°F (23.5°C). Throughout the month of September, Kittanning observes an average nighttime temperature of 54°F (12.2°C).

Humidity

The average relative humidity in September is 79%.

Rainfall

In Kittanning, Pennsylvania, in September, it is raining for 14.9 days, with typically 2.6" (66mm) of accumulated precipitation. In Kittanning, during the entire year, the rain falls for 182.9 days and collects up to 34.88" (886mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:45 am and sunset at 7:49 pm. On the last day of September, in Kittanning, sunrise is at 7:14 am and sunset at 7:01 pm EDT.

Sunshine

In September, the average sunshine in Kittanning is 8.4h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 in September interprets into the following advice:
Exercise prevention - Warding off sunburn is urged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Kittanning, the average high-temperature is 74.3°F (23.5°C), and the average low-temperature is 54°F (12.2°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is evaluated at 87.8°F (31°C).

The average relative humidity in September is 79%.

In Kittanning, in September, during 14.9 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

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

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

The average day length in September is 12h and 27min.

On the first day of September, sunrise is at 6:45 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:01 pm EDT.

In Kittanning, Pennsylvania, the average sunshine duration in September is 8.4h.

In Kittanning, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Aug

September

Oct

Average high temperature

80.4°F

74.3°F

60.8°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph

5.6mph

7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

12.3

12.5

11.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Kittanning, PA

Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.4°F).

Average low temperature in September: 54°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Kittanning, PA

Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Kittanning, PA

Average wind speed in September: 5.3mph

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

Average humidity in September
Kittanning, PA

Average humidity in September: 79%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in September
Kittanning, PA

Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is November (2.17").

Average rainfall days in September
Kittanning, PA

Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in September
Kittanning, PA

Average snowfall in September: 0"

The month with the highest snowfall is January (6.65").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Kittanning, PA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 30min

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 24min

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 42min).