September weather forecastDemunds Corners, PA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Demunds Corners, Pennsylvania, with an average temperature ranging between min 51.8°F (11°C) and max 71.4°F (21.9°C).Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 78.3°F (25.7°C) in August to a pleasant 71.4°F (21.9°C). In Demunds Corners, the expected average low-temperature for September is a cool 51.8°F (11°C).Humidity
In Demunds Corners, Pennsylvania, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.73" (44mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Demunds Corners is 12h and 28min.On the first day of September, sunrise is at 6:30 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:46 pm EDT.
Sunshine
In Demunds Corners, Pennsylvania, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Demunds Corners is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Demunds Corners, PA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Demunds Corners, PA
- Average pressure in September: 30.07"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
Demunds Corners, PA
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are March and April (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Demunds Corners, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in September
Demunds Corners, PA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Demunds Corners, PA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in September
Demunds Corners, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Demunds Corners, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Demunds Corners, PA
- Average daylight in September: 12h and 30min
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 12min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Demunds Corners, PA
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in September
Demunds Corners, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Demunds Corners, PA
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Demunds Corners, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
