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
As August transitions into September, West Sunbury sees a gentle drop in the average high-temperature, transitioning from a moderately hot 80.1°F (26.7°C) to a still warm 73.6°F (23.1°C). In West Sunbury, September nights cool down to an average of 54.1°F (12.3°C).Humidity
The average relative humidity in September is 80%.Rainfall
In West Sunbury, in September, during 16.1 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In West Sunbury, during the entire year, the rain falls for 177.9 days and collects up to 37.56" (954mm) of precipitation.Snowfall
In West Sunbury, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, 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.
Sunshine
In West Sunbury, the average sunshine in September is 8h.UV index
The average daily maximum UV index in September in West Sunbury, Pennsylvania, is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
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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