September weather forecastStoneboro, PA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Stoneboro, Pennsylvania, with an average temperature varying between 52.9°F (11.6°C) and 72.1°F (22.3°C).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a warm 78.4°F (25.8°C) in August to an agreeable 72.1°F (22.3°C). Throughout the month of September, Stoneboro witnesses an average temperature of 52.9°F (11.6°C).Humidity
In September, the average relative humidity is 81%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.3 days and typically collects 2.28" (58mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:47 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 Stoneboro, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stoneboro, PA
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 52.9°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°F).
Average pressure in September
Stoneboro, PA
- Average pressure in September: 30.05"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
Stoneboro, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Stoneboro, PA
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (79%).
Average rainfall in September
Stoneboro, PA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Stoneboro, PA
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Stoneboro, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (10.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stoneboro, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stoneboro, 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 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Stoneboro, PA
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is September (12.8 days).
The month with the least sunshine days is February (5.8 days).
Average UV index in September
Stoneboro, 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
Stoneboro, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Stoneboro, 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).
