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's onset sees an average high-temperature of a still moderately hot 82.6°F (28.1°C), exhibiting a slight fluctuation from the previous month. A mean low-temperature of 74.1°F (23.4°C) is anticipated during the month of September in Whitehall Terrace, a slight step down from the daytime high.Heat index
September's mean heat index is estimated at a tropical 89.6°F (32°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Whitehall Terrace, in September, it is raining for 18.5 days, with typically 5.67" (144mm) of accumulated precipitation. Throughout the year, there are 184.5 rainfall days, and 45.83" (1164mm) of precipitation is accumulated.Snowfall
In Whitehall Terrace, snow does not fall in March through December.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:04 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September in Whitehall Terrace is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
Is it hot in Whitehall Terrace during September?
What is the average humidity in September in Whitehall Terrace?
How much does it rain in Whitehall Terrace in September?
When it does not snow in Whitehall Terrace?
How many hours of daylight does Whitehall Terrace have in September?
When is the sunrise / sunset in September in Whitehall Terrace?
How long on average sun shines in September in Whitehall Terrace?
What is the UV index reading in September in Whitehall Terrace?
Average temperature in September
Whitehall Terrace, SC
- Average high temperature in September: 82.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).
Average pressure in September
Whitehall Terrace, 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 (29.98"Hg).
Average wind speed in September
Whitehall Terrace, SC
- Average wind speed in September: 9.4mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Whitehall Terrace, SC
- Average humidity in September: 76%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in September
Whitehall Terrace, SC
- Average rainfall in September: 5.67"
The wettest month (with the highest rainfall) is August (7.83").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in September
Whitehall Terrace, SC
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is August (25.2 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Whitehall Terrace, 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
Whitehall Terrace, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Whitehall Terrace, 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Whitehall Terrace, SC
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in September
Whitehall Terrace, SC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Whitehall Terrace, SC
- Average cloud cover in September: 28
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Whitehall Terrace, 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).
Whitehall Terrace, South Carolina, USA
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