September weather forecast
Mount Pleasant, NC

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Weather in September

September, the first month of the autumn in Mount Pleasant, is also a moderately hot month, with an average temperature ranging between max 82.2°F (27.9°C) and min 63.5°F (17.5°C).

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from a hot 87.8°F (31°C) in August to a warm 82.2°F (27.9°C). Mount Pleasant in September anticipates an average nighttime temperature of 63.5°F (17.5°C).

Heat index

For most parts of September, the heat index is evaluated at a hot 87.8°F (31°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

The average relative humidity in September in Mount Pleasant is 74%.

Rainfall

In September, in Mount Pleasant, the rain falls for 12.8 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 160.4 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Mount Pleasant.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 6:54 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:06 pm EDT.

Sunshine

In September, the average sunshine is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

What is the temperature in September in Mount Pleasant?

The average high-temperature and low-temperature in Mount Pleasant during September are 82.2°F (27.9°C) and 63.5°F (17.5°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in September in Mount Pleasant?

The average relative humidity in September in Mount Pleasant, North Carolina, is 74%.

How much does it rain in Mount Pleasant in September?

In Mount Pleasant, North Carolina, in September, it is raining for 12.8 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Mount Pleasant?

In Mount Pleasant, North Carolina, snow does not fall in April through November.

What is the average length of the day in September in Mount Pleasant?

In September, the average day length is 12h and 23min.

When is the sunrise / sunset in September in Mount Pleasant?

In September, on the first day of the month, sunrise is at 6:54 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:06 pm EDT.

How many hours of sunshine does Mount Pleasant have in September?

In Mount Pleasant, North Carolina, the average sunshine duration in September is 9h.

What is the UV index reading in September in Mount Pleasant?

In September, the average daily maximum UV index in Mount Pleasant, North Carolina, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Mount Pleasant, NC

Average temperature in September - Mount Pleasant, NC
  • Average high temperature in September: 82.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (48.4°F).

  • Average low temperature in September: 63.5°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

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Average pressure in September
Mount Pleasant, NC

Average pressure in September - Mount Pleasant, NC
  • 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 (29.97"Hg).

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Average wind speed in September
Mount Pleasant, NC

Average wind speed in September - Mount Pleasant, NC
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Mount Pleasant, NC

Average humidity in September - Mount Pleasant, NC
  • Average humidity in September: 74%

The months with the highest relative humidity are May and December (76%).
The months with the lowest relative humidity are June and July (71%).

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Average rainfall in September
Mount Pleasant, NC

Average rainfall in September - Mount Pleasant, NC
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is October (1.97").

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Average rainfall days in September
Mount Pleasant, NC

Average rainfall days in September - Mount Pleasant, NC
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (17.9 days).
The months with the least rainy days are October and November (9.5 days).

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Average snowfall in September
Mount Pleasant, NC

Average snowfall in September - Mount Pleasant, NC
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.57").
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
Mount Pleasant, NC

Average snowfall days in September - Mount Pleasant, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Mount Pleasant, NC

Average daylight in September / Average sunshine in September - Mount Pleasant, NC
  • 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: 9h and 0min

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
Mount Pleasant, NC

Average sunshine days in September - Mount Pleasant, NC
  • Average sunshine days in September: 15 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in September
Mount Pleasant, NC

Average UV index in September - Mount Pleasant, NC
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in September
Mount Pleasant, NC

Average cloud cover in September - Mount Pleasant, NC
  • Average cloud cover in September: 33

The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in September
Mount Pleasant, NC

Average visibility in September - Mount Pleasant, NC
  • 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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Mount Pleasant, North Carolina, USA

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