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
In Portersville, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 80.2°F (26.8°C) to a still moderately hot 73.9°F (23.3°C). Portersville experiences an average nighttime temperature of 54.3°F (12.4°C) in the month of September.Humidity
In September, the average relative humidity in Portersville, Pennsylvania, is 79%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 179.7 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
In Portersville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:03 pm EDT.
Sunshine
In September, the average sunshine in Portersville is 8.2h.UV index
In Portersville, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Portersville in September?
What is the average humidity in September in Portersville?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Portersville have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Portersville, PA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 54.3°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 (19.2°F).
Average pressure in September
Portersville, 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
Portersville, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Portersville, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June, July and August (78%).
Average rainfall in September
Portersville, PA
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Portersville, PA
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in September
Portersville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Portersville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Portersville, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Portersville, PA
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is November (14 days).
The month with the least sunshine days is February (6.6 days).
Average UV index in September
Portersville, PA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Portersville, PA
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Portersville, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
Portersville, Pennsylvania, USA
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