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 registers an average high-temperature of a moderately hot 85.3°F (29.6°C), slightly varied from August's 90.3°F (32.4°C). September witnesses an average nighttime temperature of 68.2°F (20.1°C).Heat index
In September, the average heat index is calculated to be a fiery hot 96.8°F (36°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising 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.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
August, September and December, with an average relative humidity of 77%, are the most humid months in Ridgeville.Rainfall
In September, in Ridgeville, South Carolina, the rain falls for 11.6 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. In Ridgeville, during the entire year, the rain falls for 126.8 days and collects up to 13.19" (335mm) of precipitation.Snowfall
In Ridgeville, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:45 pm. On the last day of September, in Ridgeville, sunrise is at 7:15 am and sunset at 7:06 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 6 during September leads to these advisories:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
How hot is September in Ridgeville?
What is the most humid month in Ridgeville?
What is the average humidity in September in Ridgeville?
How much does it rain in Ridgeville in September?
When it does not snow in Ridgeville?
What is the average length of the day in September in Ridgeville?
What time are sunrise and sunset in September in Ridgeville?
How long on average sun shines in September in Ridgeville?
How high is the UV index in September in Ridgeville?
Average temperature in September
Ridgeville, SC
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Ridgeville, SC
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Ridgeville, SC
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Ridgeville, SC
- Average humidity in September: 77%
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is January (72%).
Average rainfall in September
Ridgeville, SC
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Ridgeville, SC
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is November (5.3 days).
Average snowfall in September
Ridgeville, SC
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Ridgeville, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ridgeville, SC
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Ridgeville, SC
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (23.1 days).
The month with the least sunshine days is August (10.2 days).
Average UV index in September
Ridgeville, SC
- 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
Ridgeville, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Ridgeville, SC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Ridgeville, South Carolina, USA
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