September weather forecastSheffield, PA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Sheffield, Pennsylvania, with temperature in the range of an average high of 70.2°F (21.2°C) and an average low of 50°F (10°C).Temperature
In September, the average high-temperature marginally drops from a moderately hot 76.5°F (24.7°C) in August to a pleasant 70.2°F (21.2°C). September generally records an average low-temperature of 50°F (10°C).Humidity
In Sheffield, the average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall. Rain falls for 15.5 days and accumulates 2.2" (56mm) of precipitation.Snowfall
In Sheffield, 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 the month, sunrise is at 6:42 am and sunset at 7:48 pm. On the last day of September, in Sheffield, sunrise is at 7:12 am and sunset at 6:59 pm EDT.
Sunshine
In Sheffield, the average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 3 transforms into the following advice:
Be vigilant - Preventing sunburn is recommended. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sheffield, PA
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Sheffield, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Sheffield, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Sheffield, PA
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May and June (80%).
Average rainfall in September
Sheffield, PA
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
Sheffield, PA
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Sheffield, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sheffield, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sheffield, PA
- Average daylight in September: 12h and 30min
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: 7h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in September
Sheffield, PA
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is September (12.1 days).
The month with the least sunshine days is February (4.6 days).
Average UV index in September
Sheffield, 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
Sheffield, PA
- Average cloud cover in September: 47
The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Sheffield, PA
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, March, August, September and December (4mi).
