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
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 79.3°F (26.3°C) in August to an agreeable 71.2°F (21.8°C). During September, Greenville consistently records a temperature low averaging a fresh 51.1°F (10.6°C).Humidity
The average relative humidity in September in Greenville, New York, is 79%.Rainfall
In Greenville, in September, it is raining for 11.5 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, in Greenville, New York, there are 153.2 rainfall days, and 30" (762mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Greenville is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:29 pm. On the last day of September, in Greenville, sunrise is at 6:52 am and sunset at 6:38 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index in Greenville is 3. A UV Index of 3 to 5 symbolizes a medium health hazard 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 careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Greenville?
What is the average humidity in September in Greenville?
How many days does it rain in September in Greenville?
When it does not snow in Greenville?
Does it snow in Greenville in September?
How many hours of daylight does Greenville have in September?
When are sunrise and sunset in September in Greenville?
How long on average sun shines in September in Greenville?
What is the UV index intensity in September in Greenville?
Average temperature in September
Greenville, NY
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in September: 51.1°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 (16.9°F).
Average pressure in September
Greenville, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Greenville, NY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Greenville, NY
- Average humidity in September: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Greenville, NY
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is July (3.43").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Greenville, NY
- Average rainfall days in September: 11.5 days
The months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Greenville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Greenville, NY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenville, NY
- Average daylight in September: 12h and 3min
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 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Greenville, NY
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in September
Greenville, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Greenville, NY
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Greenville, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, November and December (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and October (5mi).
Greenville, New York, USA
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