September weather forecastParis, PA

September

Weather in September

September, the first month of the autumn in Paris, is still a warm month, with temperature in the range of an average high of 75.2°F (24°C) and an average low of 55°F (12.8°C).

Temperature

As September begins, there is a minor decrease in the average high-temperature, softly falling from 81.9°F (27.7°C) in August to a still moderately hot 75.2°F (24°C). In September, Paris's temperature tends to fall to an average low of 55°F (12.8°C) during the night.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Paris, during September, the rain falls for 14.9 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Paris, during the entire year, the rain falls for 175.9 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of the month, sunrise is at 6:50 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

In Paris, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Updated: Aug 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Paris experiences an average high-temperature of 75.2°F (24°C) and a low-temperature of 55°F (12.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 87.8°F (31°C).

The average relative humidity in September is 79%.

In September, in Paris, Pennsylvania, the rain falls for 14.9 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

June through September are months without snowfall.

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

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

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

The average sunshine duration in September in Paris is 8.2h.

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

81.9°F

75.2°F

61.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5mph

5.3mph

6.9mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

12.5

13.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Paris, PA

Average high temperature in September: 75.2°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 (33.1°F).

Average low temperature in September: 55°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
Paris, 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
Paris, PA

Average wind speed in September: 5.2mph

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 (4.7mph).

Average humidity in September
Paris, PA

Average humidity in September: 79%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in September
Paris, PA

Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is November (2.17").

Average rainfall days in September
Paris, PA

Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.4 days).

Average snowfall in September
Paris, PA

Average snowfall in September: 0"

The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Paris, PA

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 24min

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 12min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).