September weather forecast
Trinity, SC

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Weather in September

September, the first month of the autumn in Trinity, is still a warm month, with an average temperature varying between 84.7°F (29.3°C) and 65.3°F (18.5°C).

Temperature

September's arrival registers an average high-temperature of a warm 84.7°F (29.3°C), closely aligning with the temperature of the previous month. In the month of September, an average of 65.3°F (18.5°C) marks the low-temperature in Trinity.

Heat index

The heat index in September is computed to be a hot 93.2°F (34°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In September, the average relative humidity in Trinity is 72%.

Rainfall

September is the month with the least rainfall in Trinity, South Carolina. Rain falls for 11.5 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In Trinity, the average length of the day in September is 12h and 23min.
On the first day of September in Trinity, sunrise is at 7:00 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm EDT.

Sunshine

The average sunshine in September in Trinity is 8.5h.

UV index

In Trinity, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

How hot does it get in Trinity in September?

In September, in Trinity, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 65.3°F (18.5°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 93.2°F (34°C).

What is the average humidity in September in Trinity?

The average relative humidity in September in Trinity, South Carolina, is 72%.

What is the driest month in Trinity?

September is the month with the least rainfall in Trinity, South Carolina. Rain falls for 11.5 days and accumulates 1.42" (36mm) of precipitation.

How much does it rain in Trinity in September?

In September, in Trinity, the rain falls for 11.5 days. Throughout September, 1.42" (36mm) of precipitation is accumulated.

When it does not snow in Trinity?

In Trinity, snow does not fall in April through November.

How many hours of daylight does Trinity have in September?

The average day length in September in Trinity is 12h and 23min.

What time are sunrise and sunset in September in Trinity?

In September, on the first day of the month, sunrise is at 7:00 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:12 pm EDT.

How long on average sun shines in September in Trinity?

In September, the average sunshine duration in Trinity is 8.5h.

How high is the UV index in September in Trinity?

In Trinity, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
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
Trinity, SC

Average temperature in September - Trinity, SC
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (51.4°F).

  • Average low temperature in September: 65.3°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

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Average pressure in September
Trinity, SC

Average pressure in September - Trinity, SC
  • Average pressure in September: 30.02"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
Trinity, SC

Average wind speed in September - Trinity, SC
  • Average wind speed in September: 5.4mph

The windiest months (with the highest average wind speed) are February and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Trinity, SC

Average humidity in September - Trinity, SC
  • Average humidity in September: 72%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in September
Trinity, SC

Average rainfall in September - Trinity, SC
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days in September
Trinity, SC

Average rainfall days in September - Trinity, SC
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in September
Trinity, SC

Average snowfall in September - Trinity, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.75").
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
Trinity, SC

Average snowfall days in September - Trinity, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.6 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
Trinity, SC

Average daylight in September / Average sunshine in September - Trinity, SC
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
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 24min).

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Average sunshine days in September
Trinity, SC

Average sunshine days in September - Trinity, SC
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (11.2 days).

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Average UV index in September
Trinity, SC

Average UV index in September - Trinity, SC
  • Average UV index in September: 5

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

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Average cloud cover in September
Trinity, SC

Average cloud cover in September - Trinity, SC
  • Average cloud cover in September: 31

The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in September
Trinity, SC

Average visibility in September - Trinity, 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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Trinity, South Carolina, USA

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