September weather forecast
Tega Cay, SC

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Tega Cay, South Carolina, with an average temperature varying between 64°F (17.8°C) and 83.3°F (28.5°C).

Temperature

In Tega Cay, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's hot 88.9°F (31.6°C) to a moderately hot 83.3°F (28.5°C). The average low-temperature of 64°F (17.8°C) is witnessed in Tega Cay, South Carolina, during September.

Heat index

For most parts of September, the heat index is calculated to be a hot 89.6°F (32°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In September, the average relative humidity is 71%.

Rainfall

September is the month with the least rainfall in Tega Cay. Rain falls for 11.2 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

April through November are months without snowfall in Tega Cay.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September in Tega Cay, South Carolina, sunrise is at 6:57 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:09 pm EDT.

Sunshine

In Tega Cay, South Carolina, the average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index in Tega Cay is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 5 in September leads to these recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

How hot is it in Tega Cay in September?

The high-temperature in Tega Cay during September is 83.3°F (28.5°C) and the low-temperature is 64°F (17.8°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 89.6°F (32°C).

What is the average humidity in September in Tega Cay?

The average relative humidity in September in Tega Cay is 71%.

What is the driest month in Tega Cay?

September is the month with the least rainfall in Tega Cay, South Carolina. Rain falls for 11.2 days and accumulates 1.97" (50mm) of precipitation.

How much does it rain in Tega Cay in September?

In Tega Cay, in September, it is raining for 11.2 days, with typically 1.97" (50mm) of accumulated precipitation.

When it does not snow in Tega Cay?

In Tega Cay, snow does not fall in April through November.

What is the average length of the day in September in Tega Cay?

In Tega Cay, South Carolina, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Tega Cay?

In September, on the first day of the month, sunrise is at 6:57 am and sunset at 7:50 pm. On the last day of the month, in Tega Cay, sunrise is at 7:18 am and sunset at 7:09 pm EDT.

How many hours of sunshine does Tega Cay have in September?

In Tega Cay, South Carolina, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September in Tega Cay?

In Tega Cay, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Tega Cay, SC

Average temperature in September - Tega Cay, SC
  • Average high temperature in September: 83.3°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 (49.6°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

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Average pressure in September
Tega Cay, SC

Average pressure in September - Tega Cay, 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).

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Average wind speed in September
Tega Cay, SC

Average wind speed in September - Tega Cay, SC
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Tega Cay, SC

Average humidity in September - Tega Cay, SC
  • Average humidity in September: 71%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in September
Tega Cay, SC

Average rainfall in September - Tega Cay, SC
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in September
Tega Cay, SC

Average rainfall days in September - Tega Cay, SC
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.6 days).

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Average snowfall in September
Tega Cay, SC

Average snowfall in September - Tega Cay, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Tega Cay, SC

Average snowfall days in September - Tega Cay, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Tega Cay, SC

Average daylight in September / Average sunshine in September - Tega Cay, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Tega Cay, SC

Average sunshine days in September - Tega Cay, SC
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in September
Tega Cay, SC

Average UV index in September - Tega Cay, SC
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in September
Tega Cay, SC

Average cloud cover in September - Tega Cay, SC
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Tega Cay, SC

Average visibility in September - Tega Cay, 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).

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Tega Cay, South Carolina, USA

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