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
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 80.1°F (26.7°C) in August to a still warm 73.6°F (23.1°C). During September, the temperature in West Sunbury, Pennsylvania, tends to dip to an average of 54.1°F (12.3°C) at night.Humidity
In September, the average relative humidity in West Sunbury is 80%.Rainfall
In West Sunbury, in September, during 16.1 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, in West Sunbury, there are 177.9 rainfall days, and 37.56" (954mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in West Sunbury is 12h and 28min.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 8h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the temperature in September in West Sunbury?
What is the average humidity in September in West Sunbury?
How many days does it rain in September in West Sunbury?
When it does not snow in West Sunbury?
Does it snow in West Sunbury in September?
What is the average length of the day in September in West Sunbury?
When is the sunrise / sunset in September in West Sunbury?
How many hours of sunshine does West Sunbury have in September?
What is the UV index reading in September in West Sunbury?
Average temperature in September
West Sunbury, PA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
West Sunbury, 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
West Sunbury, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.1mph).
Average humidity in September
West Sunbury, PA
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April, July and August (78%).
Average rainfall in September
West Sunbury, PA
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.36").
Average rainfall days in September
West Sunbury, PA
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
West Sunbury, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
West Sunbury, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Sunbury, PA
- Average daylight in September: 12h and 3min
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 0min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
West Sunbury, PA
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is November (13.8 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in September
West Sunbury, PA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
West Sunbury, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
West Sunbury, PA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
West Sunbury, Pennsylvania, USA
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