September weather forecastMayo, SC
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Mayo, South Carolina, with an average temperature varying between 83.1°F (28.4°C) and 62.2°F (16.8°C).Temperature
Mayo observes a small decrease in the average high-temperature with the arrival of September, falling from August's hot 89.2°F (31.8°C) to a warm 83.1°F (28.4°C). The average temperature during September nights in Mayo is registered at a comfortable 62.2°F (16.8°C).Heat index
September's average heat index is calculated to be a tropical 89.6°F (32°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in September in Mayo, South Carolina, is 72%.Rainfall
September is the month with the least rainfall in Mayo. Rain falls for 11.4 days and accumulates 1.46" (37mm) of precipitation.Snowfall
In Mayo, snow does not fall in April through October.Daylight
The average length of the day in September in Mayo, South Carolina, is 12h and 23min.On the first day of September in Mayo, sunrise is at 7:00 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:12 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index in Mayo is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the UV index of 5 transforms into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mayo, SC
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.4°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in September
Mayo, SC
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Mayo, SC
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Mayo, SC
- Average humidity in September: 72%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (68%).
Average rainfall in September
Mayo, SC
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in September
Mayo, SC
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Mayo, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.44").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mayo, SC
- 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
Mayo, SC
- 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: 8h and 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Mayo, SC
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Mayo, SC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Mayo, SC
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are June and July (Cloud cover 28).
Average visibility in September
Mayo, SC
- 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).
