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 brings a marginal elevation to a warm 85.5°F (29.7°C) from August's 90.1°F (32.3°C) in Ladson's average high-temperatures. In Ladson, an average temperature of 69.3°F (20.7°C) is noted during September nights.Heat index
September's mean heat index is estimated at a sweltering 96.8°F (36°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
The average relative humidity in September in Ladson is 76%.Rainfall
In Ladson, South Carolina, in September, during 11.2 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 120.6 rainfall days, and 11.18" (284mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Ladson.Daylight
In Ladson, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:45 pm. On the last day of September, in Ladson, sunrise is at 7:14 am and sunset at 7:05 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Ladson, South Carolina, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Ladson in September?
What is the average humidity in September in Ladson?
How many days does it rain in September in Ladson?
When it does not snow in Ladson?
How many hours of daylight does Ladson have in September?
What time are sunrise and sunset in September in Ladson?
How long on average sun shines in September in Ladson?
How high is the UV index in September in Ladson?
Average temperature in September
Ladson, SC
- Average high temperature in September: 85.5°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 (56.8°F).
- Average low temperature in September: 69.3°F
The month with the highest average low temperature is July (74.7°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in September
Ladson, 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
Ladson, SC
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Ladson, 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 (72%).
Average rainfall in September
Ladson, SC
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Ladson, SC
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in September
Ladson, 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
Ladson, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Ladson, 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 4min
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
Ladson, SC
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is August (7.4 days).
Average UV index in September
Ladson, SC
- Average UV index in September: 6
The months with the highest UV index are May, 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
Ladson, SC
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 29).
Average visibility in September
Ladson, 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).
Ladson, South Carolina, USA
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