Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a warm 81°F (27.2°C) in August to a still moderately hot 74.1°F (23.4°C). Coplay usually reports an average low-temperature of 55°F (12.8°C) during the month of September.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.93" (49mm) of precipitation.Snowfall
June through September are months without snowfall.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 6:58 am and sunset at 6:45 pm EDT.
Sunshine
In September, the average sunshine is 8.8h.UV index
In Coplay, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Coplay?
What is the average humidity in September in Coplay?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Coplay have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Coplay have in September?
How high is the UV index in September?
Average temperature in September
Coplay, PA
- Average high temperature in September: 74.1°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 (33.8°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Coplay, 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
Coplay, PA
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Coplay, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in September
Coplay, PA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Coplay, PA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).
Average snowfall in September
Coplay, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Coplay, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Coplay, PA
- Average daylight in September: 12h and 3min
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 5min
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
Coplay, PA
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).
Average UV index in September
Coplay, PA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Coplay, 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 33).
Average visibility in September
Coplay, PA
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Coplay, Pennsylvania, USA
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