September weather forecastGreenville, NC
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Greenville, North Carolina, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 81.5°F (27.5°C).Temperature
The average high-temperature during September registers at a moderately hot 81.5°F (27.5°C), closely corresponding to the preceding month. Nighttime temperatures hover around an average low of 65.1°F (18.4°C) in September.Heat index
The average heat index in September is computed to be a tropical 87.8°F (31°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Be advised, the heat index considers values for conditions in shade and with a light breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
May, July through September, with an average relative humidity of 79%, are the most humid months.Rainfall
In Greenville, during September, the rain falls for 14.6 days and regularly aggregates up to 3.43" (87mm) of precipitation. Throughout the year, there are 165.6 rainfall days, and 33.94" (862mm) of precipitation is accumulated.Snowfall
In Greenville, snow does not fall in April through November.Daylight
In Greenville, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:42 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:54 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greenville, NC
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (48.9°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Greenville, NC
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Greenville, NC
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Greenville, NC
- Average humidity in September: 79%
The months with the highest relative humidity are May, July, August and September (79%).
The month with the lowest relative humidity is January (74%).
Average rainfall in September
Greenville, NC
- Average rainfall in September: 3.43"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in September
Greenville, NC
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (19.6 days).
The months with the least rainy days are October and November (9.4 days).
Average snowfall in September
Greenville, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Greenville, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Greenville, NC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Greenville, NC
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Greenville, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Greenville, NC
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Greenville, NC
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
