September weather forecastSheldon, SC
September
Weather in September
September, the first month of the autumn in Sheldon, is also a moderately hot month, with an average temperature fluctuating between 85.8°F (29.9°C) and 70.9°F (21.6°C).Temperature
At the onset of September, Sheldon records an average high-temperature of a moderately hot 85.8°F (29.9°C), showing little deviation from the preceding month. Sheldon, during the nights of September, experiences an average temperature drop to an agreeable 70.9°F (21.6°C).Heat index
The average heat index in September is estimated at a sweltering 96.8°F (36°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 15.9 days. Throughout September, 3.07" (78mm) of precipitation is accumulated. In Sheldon, during the entire year, the rain falls for 166.9 days and collects up to 33.9" (861mm) of precipitation.Snowfall
In Sheldon, snow does not fall in February through December.Daylight
In Sheldon, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:08 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Sheldon is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 6 in September transforms into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sheldon, SC
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (57.7°F).
- Average low temperature in September: 70.9°F
The months with the highest average low temperature are July and August (75.6°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).
Average pressure in September
Sheldon, SC
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Sheldon, SC
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Sheldon, SC
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (71%).
Average rainfall in September
Sheldon, SC
- Average rainfall in September: 3.07"
The wettest month (with the highest rainfall) is August (4.76").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in September
Sheldon, SC
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Sheldon, SC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Sheldon, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Sheldon, SC
- Average daylight in September: 12h and 24min
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 36min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Sheldon, SC
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (5.2 days).
Average UV index in September
Sheldon, SC
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Sheldon, SC
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Sheldon, 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).
