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 is characterized by a slight reduction in average high-temperature, easing from 94.6°F (34.8°C) in August to a still tropical 87.3°F (30.7°C). During September, Greenville witnesses a consistent average low-temperature of 68.4°F (20.2°C).Heat index
September's average heat index is estimated at a fiery hot 96.8°F (36°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Realize that the values for the heat index are set for shaded places and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The average relative humidity in September in Greenville is 67%.Rainfall
In Greenville, in September, it is raining for 15.8 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Greenville, there are 154.6 rainfall days, and 34.45" (875mm) of precipitation is accumulated.Snowfall
In Greenville, snow does not fall in April through October and December.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:59 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:09 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Greenville, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
Is it hot in Greenville during September?
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?
What is the average length of the day in September in Greenville?
When are sunrise and sunset in September in Greenville?
How many hours of sunshine does Greenville have in September?
What is the UV index intensity in September in Greenville?
Average temperature in September
Greenville, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in September: 68.4°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in September
Greenville, TX
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Greenville, TX
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).
Average humidity in September
Greenville, TX
- Average humidity in September: 67%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Greenville, TX
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is October (4.29").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in September
Greenville, TX
- Average rainfall days in September: 15.8 days
The months with the highest number of rainy days are May and September (15.8 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Greenville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Greenville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Greenville, TX
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (13 days).
Average UV index in September
Greenville, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Greenville, TX
- Average cloud cover in September: 29
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Greenville, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Greenville, Texas, USA
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