September weather forecastCopella, PA
September
Weather in September
The first month of the autumn, September, is still a warm month in Copella, Pennsylvania, with an average temperature varying between 54.5°F (12.5°C) and 73.8°F (23.2°C).Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 80.2°F (26.8°C) in August to a still moderately hot 73.8°F (23.2°C). An average minimum temperature of 54.5°F (12.5°C) marks the month of September in Copella.Humidity
In Copella, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall in Copella, Pennsylvania. Rain falls for 12.2 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Copella, 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 September, sunrise is at 6:29 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:44 pm EDT.
Sunshine
The average sunshine in September in Copella, Pennsylvania, is 8.7h.UV index
The average daily maximum UV index in September in Copella is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Copella, PA
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in September
Copella, PA
- Average pressure in September: 30.06"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
Copella, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Copella, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Copella, PA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.46").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Copella, PA
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (9.9 days).
Average snowfall in September
Copella, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Copella, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Copella, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Copella, PA
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Copella, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Copella, PA
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Copella, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
