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's arrival signals a moderate reduction in the average high-temperature, easing from a warm 78.4°F (25.8°C) in August to an agreeable 72.3°F (22.4°C). During the month of September, the temperature falls to an average of 53.1°F (11.7°C).Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 12 days and accumulates 1.81" (46mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:35 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
In Leslie Run, the average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index in Leslie Run is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Leslie Run have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Leslie Run have in September?
What is the UV index intensity in September?
Average temperature in September
Leslie Run, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in September
Leslie Run, 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
Leslie Run, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Leslie Run, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in September
Leslie Run, PA
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Leslie Run, PA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Leslie Run, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Leslie Run, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Leslie Run, PA
- Average daylight in September: 12h and 3min
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 18min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Leslie Run, PA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in September
Leslie Run, PA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Leslie Run, PA
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Leslie Run, 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).
Leslie Run, Pennsylvania, USA
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