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 arrival of September corresponds with a light shift in temperature, down from 80.6°F (27°C) in August to a still warm 74.5°F (23.6°C). During September, the average low-temperature is a mild 55.8°F (13.2°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In Bowmansville, in September, during 9.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Bowmansville, during the entire year, the rain falls for 127.9 days and collects up to 11.69" (297mm) of precipitation.Snowfall
April, June through October 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 6:32 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:47 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 during September leads to these advisories:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Bowmansville, PA
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Bowmansville, PA
- Average pressure in September: 30.06"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
Bowmansville, PA
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Bowmansville, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Bowmansville, PA
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is July (1.46").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Bowmansville, PA
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Bowmansville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.18").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Bowmansville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Bowmansville, PA
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Bowmansville, PA
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in September
Bowmansville, PA
- Average UV index in September: 4
The months with the highest UV index are May, 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
Bowmansville, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Bowmansville, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Bowmansville, Pennsylvania, USA
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