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 arrival comes with a mild decrease in the average high-temperature, moving subtly from a hot 89.4°F (31.9°C) in August to a moderately hot 83.8°F (28.8°C). Nighttime temperatures consistently average a comfortable 63.5°F (17.5°C) during September.Heat index
For September, the heat index is evaluated at a hot 91.4°F (33°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
The average relative humidity in September in Glenn Springs is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.54" (39mm) of precipitation.Snowfall
In Glenn Springs, South Carolina, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 7:00 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 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 is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Glenn Springs have in September?
How high is the UV index in September?
Average temperature in September
Glenn Springs, SC
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Glenn Springs, SC
- Average pressure in September: 30.03"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
Glenn Springs, SC
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Glenn Springs, 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
Glenn Springs, SC
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Glenn Springs, SC
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in September
Glenn Springs, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.97").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Glenn Springs, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Glenn Springs, SC
- Average daylight in September: 12h and 2min
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 54min).
- Average sunshine in September: 8h and 3min
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 18min).
Average sunshine days in September
Glenn Springs, SC
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Glenn Springs, SC
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Glenn Springs, 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 June and July (Cloud cover 29).
Average visibility in September
Glenn Springs, 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).
Glenn Springs, South Carolina, USA
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