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 arrival of September corresponds with a light shift in temperature, down from 79.3°F (26.3°C) in August to a still warm 73.9°F (23.3°C). Greenville's nighttime temperature in September drops to an average of 56.5°F (13.6°C).Humidity
The average relative humidity in September in Greenville, Ohio, is 79%.Rainfall
In Greenville, during September, the rain falls for 11.9 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Greenville, there are 145.2 rainfall days, and 19.21" (488mm) of precipitation is accumulated.Snowfall
In Greenville, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:09 pm. On the last day of September, in Greenville, sunrise is at 7:34 am and sunset at 7:21 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Greenville, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Undertake protective steps - Recommendations to avoid sunburn are issued. To protect against the Sun's most potent rays, avoid direct exposure around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the usual temperature for Greenville in September?
What is the average humidity in September in Greenville?
How much does it rain in Greenville in September?
When it does not snow in Greenville?
Does it snow in Greenville in September?
What is the average length of the day in September in Greenville?
When are sunrise and sunset in September in Greenville?
How long on average sun shines in September in Greenville?
What is the UV index reading in September in Greenville?
Average temperature in September
Greenville, OH
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Greenville, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Greenville, OH
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Greenville, OH
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Greenville, OH
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in September
Greenville, OH
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Greenville, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Greenville, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Greenville, OH
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Greenville, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Greenville, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Greenville, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Greenville, Ohio, USA
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