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
Smyrna's progression into September involves a minor drop in the average high-temperature, slightly receding from a hot 89.1°F (31.7°C) in August to a warm 82.9°F (28.3°C). During the month of September, Smyrna anticipates a mean low-temperature of 62.4°F (16.9°C).Heat index
In September, the average heat index is calculated to be a hot 89.6°F (32°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In Smyrna, the average relative humidity in September is 73%.Rainfall
In September, the rain falls for 12 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. Throughout the year, in Smyrna, there are 150.1 rainfall days, and 27.68" (703mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Smyrna, South Carolina, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:51 pm. On the last day of September, in Smyrna, sunrise is at 7:20 am and sunset at 7:10 pm EDT.
Sunshine
In September, the average sunshine in Smyrna, South Carolina, is 8.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot does it get in Smyrna in September?
What is the average humidity in September in Smyrna?
How much does it rain in Smyrna in September?
When it does not snow in Smyrna?
How many hours of daylight does Smyrna have in September?
When is the sunrise / sunset in September in Smyrna?
How long on average sun shines in September in Smyrna?
How high is the UV index in September in Smyrna?
Average temperature in September
Smyrna, SC
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in September: 62.4°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 (32.7°F).
Average pressure in September
Smyrna, 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
Smyrna, SC
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Smyrna, SC
- Average humidity in September: 73%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Smyrna, SC
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is October (1.73").
Average rainfall days in September
Smyrna, SC
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Smyrna, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.01").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Smyrna, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Smyrna, 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 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Smyrna, SC
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in September
Smyrna, 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
Smyrna, SC
- Average cloud cover in September: 34
The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in September
Smyrna, SC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Smyrna, South Carolina, USA
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