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 marks a gentle change in average high-temperature, declining from August's moderately hot 76.6°F (24.8°C) to an agreeable 69.6°F (20.9°C). During the nights in September, Oswayo observes an average low-temperature of 49.5°F (9.7°C).Humidity
In September, the average relative humidity is 81%.Rainfall
In Oswayo, in September, it is raining for 14.4 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 168.4 rainfall days, and 31.57" (802mm) of precipitation is accumulated.Snowfall
In Oswayo, Pennsylvania, snow does not fall in June through September.Daylight
In Oswayo, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:38 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:54 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In Oswayo, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
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?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Oswayo, PA
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in September
Oswayo, 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
Oswayo, PA
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Oswayo, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in September
Oswayo, PA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is April (3.62").
The driest month (with the least rainfall) is August (2.09").
Average rainfall days in September
Oswayo, PA
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Oswayo, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (12.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Oswayo, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Oswayo, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Oswayo, PA
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (4.7 days).
Average UV index in September
Oswayo, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Oswayo, PA
- Average cloud cover in September: 46
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Oswayo, PA
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, September and December (4mi).
Oswayo, Pennsylvania, USA
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