September weather forecast
Three Trees, SC

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Weather in September

September, the first month of the autumn in Three Trees, is still a warm month, with an average temperature varying between 83.5°F (28.6°C) and 73°F (22.8°C).

Temperature

The introduction of September sees an average high-temperature of a warm 83.5°F (28.6°C), hardly deviating from August. In the month of September, Three Trees witnesses a consistent average low-temperature of 73°F (22.8°C).

Heat index

September's average heat index is appraised at a tropical 91.4°F (33°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Three Trees, in September, during 18.4 rainfall days, 5" (127mm) of precipitation is typically accumulated. In Three Trees, South Carolina, during the entire year, the rain falls for 178.9 days and collects up to 41.93" (1065mm) of precipitation.

Snowfall

February through November are months without snowfall in Three Trees, South Carolina.

Daylight

In Three Trees, the average length of the day in September is 12h and 22min.
On the first day of September in Three Trees, sunrise is at 6:54 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:05 pm EDT.

Sunshine

In September, the average sunshine in Three Trees, South Carolina, is 9.1h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

How hot is it in Three Trees in September?

In Three Trees, 83.5°F (28.6°C) is the average high-temperature and 73°F (22.8°C) is the average low-temperature during September. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is appraised at 91.4°F (33°C).

What is the average humidity in September in Three Trees?

In Three Trees, South Carolina, the average relative humidity in September is 75%.

How much does it rain in Three Trees in September?

In September, in Three Trees, the rain falls for 18.4 days. Throughout September, 5" (127mm) of precipitation is accumulated.

When it does not snow in Three Trees?

In Three Trees, snow does not fall in February through November.

How many hours of daylight does Three Trees have in September?

In Three Trees, the average day length in September is 12h and 22min.

When are sunrise and sunset in September in Three Trees?

On the first day of September in Three Trees, sunrise is at 6:54 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:05 pm EDT.

How long on average sun shines in September in Three Trees?

In Three Trees, the average sunshine duration in September is 9.1h.

What is the UV index reading in September in Three Trees?

In September, the average daily maximum UV index in Three Trees, South Carolina, is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Three Trees, SC

Average temperature in September - Three Trees, SC
  • Average high temperature in September: 83.5°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 73°F

The month with the highest average low temperature is July (77.4°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).

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Average pressure in September
Three Trees, SC

Average pressure in September - Three Trees, 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).

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Average wind speed in September
Three Trees, SC

Average wind speed in September - Three Trees, SC
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).

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Average humidity in September
Three Trees, SC

Average humidity in September - Three Trees, SC
  • Average humidity in September: 75%

The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).

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Average rainfall in September
Three Trees, SC

Average rainfall in September - Three Trees, SC
  • Average rainfall in September: 5"

The wettest month (with the highest rainfall) is August (7.13").
The driest month (with the least rainfall) is January (1.42").

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Average rainfall days in September
Three Trees, SC

Average rainfall days in September - Three Trees, SC
  • Average rainfall days in September: 18.4 days

The month with the highest number of rainy days is August (24.8 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in September
Three Trees, SC

Average snowfall in September - Three Trees, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Three Trees, SC

Average snowfall days in September - Three Trees, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Three Trees, SC

Average daylight in September / Average sunshine in September - Three Trees, 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).

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Average sunshine days in September
Three Trees, SC

Average sunshine days in September - Three Trees, SC
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (3.8 days).

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Average UV index in September
Three Trees, SC

Average UV index in September - Three Trees, SC
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in September
Three Trees, SC

Average cloud cover in September - Three Trees, SC
  • Average cloud cover in September: 29

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in September
Three Trees, SC

Average visibility in September - Three Trees, 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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Three Trees, South Carolina, USA

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