September weather forecastSouth Gibson, PA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in South Gibson, Pennsylvania, with an average temperature fluctuating between 70.7°F (21.5°C) and 50.4°F (10.2°C).Temperature
The onset of September brings a small shift in high-temperatures, falling from a warm 77.4°F (25.2°C) in August to an agreeable 70.7°F (21.5°C). In South Gibson, the nighttime temperature averages to a cool 50.4°F (10.2°C) during September.Humidity
In South Gibson, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. Throughout the year, there are 152.2 rainfall days, and 23.94" (608mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In South Gibson, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:29 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm EDT.
Sunshine
In South Gibson, Pennsylvania, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Be vigilant - Preventing sunburn is recommended. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
South Gibson, PA
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
South Gibson, 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 (29.93"Hg).
Average wind speed in September
South Gibson, PA
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
South Gibson, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
South Gibson, PA
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in September
South Gibson, PA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
South Gibson, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Gibson, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Gibson, 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: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are February and December (Average sunshine: 3h and 12min).
Average sunshine days in September
South Gibson, PA
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in September
South Gibson, 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
South Gibson, PA
- Average cloud cover in September: 43
The months with the most cloud cover are January, February and December (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
South Gibson, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
