September weather forecastCurtisville, PA

September

Weather in September

September, the first month of the autumn in Curtisville, is still a warm month, with an average temperature fluctuating between 54.7°F (12.6°C) and 74.8°F (23.8°C).

Temperature

With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 81.3°F (27.4°C) in August to a still warm 74.8°F (23.8°C). In the month of September, Curtisville witnesses a consistent average low-temperature of 54.7°F (12.6°C).

Humidity

In September, the average relative humidity in Curtisville is 78%.

Rainfall

In Curtisville, in September, it is raining for 14.1 days, with typically 2.56" (65mm) of accumulated precipitation. Throughout the year, there are 185.5 rainfall days, and 35.59" (904mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Curtisville, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:47 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:02 pm EDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 4 during September translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing.

Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature and low-temperature in Curtisville during September are 74.8°F (23.8°C) and 54.7°F (12.6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 86°F (30°C).

In Curtisville, the average relative humidity in September is 78%.

In Curtisville, during September, the rain falls for 14.1 days and regularly aggregates up to 2.56" (65mm) of precipitation.

June through September are months without snowfall in Curtisville.

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

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

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:02 pm EDT.

The average sunshine duration in September is 8.5h.

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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

81.3°F

74.8°F

61.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.2mph

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

13.7

12.8

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Curtisville, PA

Average high temperature in September: 74.8°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (32.7°F).

Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in September
Curtisville, 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 (29.95"Hg).

Average wind speed in September
Curtisville, PA

Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in September
Curtisville, PA

Average humidity in September: 78%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).

Average rainfall in September
Curtisville, PA

Average rainfall in September: 2.56"

The wettest months (with the highest rainfall) are April and May (3.66").
The driest month (with the least rainfall) is November (2.2").

Average rainfall days in September
Curtisville, PA

Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is January (11.1 days).

Average snowfall in September
Curtisville, PA

Average snowfall in September: 0"

The month with the highest snowfall is January (6.73").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Curtisville, PA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Curtisville, 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 30min

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 54min).