September weather forecast
Fort Moultrie, SC

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Weather in September

September, the first month of the autumn in Fort Moultrie, is still a warm month, with an average temperature varying between 82.9°F (28.3°C) and 74.3°F (23.5°C).

Temperature

September's arrival brings an average high-temperature of a still warm 82.9°F (28.3°C), demonstrating subtle variation from the preceding month. During the nights of September, the average low-temperature holds at a still warm 74.3°F (23.5°C).

Heat index

For most parts of September, the heat index is appraised at a hot 89.6°F (32°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in September in Fort Moultrie is 76%.

Rainfall

In Fort Moultrie, in September, during 19.2 rainfall days, 5.71" (145mm) of precipitation is typically accumulated. Throughout the year, in Fort Moultrie, there are 182 rainfall days, and 45.55" (1157mm) of precipitation is accumulated.

Snowfall

In Fort Moultrie, snow does not fall in March through December.

Daylight

In September, the average length of the day in Fort Moultrie is 12h and 22min.
On the first day of September, sunrise is at 6:54 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:05 pm EDT.

Sunshine

In Fort Moultrie, the average sunshine in September is 9.2h.

UV index

In Fort Moultrie, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot does it get in Fort Moultrie in September?

In Fort Moultrie, in September, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 74.3°F (23.5°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in September in Fort Moultrie?

The average relative humidity in September in Fort Moultrie, South Carolina, is 76%.

How much does it rain in Fort Moultrie in September?

In September, the rain falls for 19.2 days. Throughout September, 5.71" (145mm) of precipitation is accumulated.

When it does not snow in Fort Moultrie?

In Fort Moultrie, snow does not fall in March through December.

What is the average length of the day in September in Fort Moultrie?

In Fort Moultrie, South Carolina, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Fort Moultrie?

In September, on the first day of the month, sunrise is at 6:54 am and sunset at 7:43 pm. On the last day of the month, in Fort Moultrie, sunrise is at 7:13 am and sunset at 7:05 pm EDT.

How long on average sun shines in September in Fort Moultrie?

The average sunshine duration in September in Fort Moultrie is 9.2h.

What is the UV index intensity in September in Fort Moultrie?

In Fort Moultrie, South Carolina, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fort Moultrie, SC

Average temperature in September - Fort Moultrie, SC
  • Average high temperature in September: 82.9°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (57°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is July (78.3°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).

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Average pressure in September
Fort Moultrie, SC

Average pressure in September - Fort Moultrie, 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
Fort Moultrie, SC

Average wind speed in September - Fort Moultrie, SC
  • Average wind speed in September: 9.2mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).

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Average humidity in September
Fort Moultrie, SC

Average humidity in September - Fort Moultrie, SC
  • Average humidity in September: 76%

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
Fort Moultrie, SC

Average rainfall in September - Fort Moultrie, SC
  • Average rainfall in September: 5.71"

The wettest month (with the highest rainfall) is August (8.23").
The driest month (with the least rainfall) is January (1.42").

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Average rainfall days in September
Fort Moultrie, SC

Average rainfall days in September - Fort Moultrie, SC
  • Average rainfall days in September: 19.2 days

The month with the highest number of rainy days is August (25.9 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall days in September
Fort Moultrie, SC

Average snowfall days in September - Fort Moultrie, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Fort Moultrie, SC

Average daylight in September / Average sunshine in September - Fort Moultrie, 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
Fort Moultrie, SC

Average sunshine days in September - Fort Moultrie, SC
  • Average sunshine days in September: 7.9 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (2.8 days).

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Average UV index in September
Fort Moultrie, SC

Average UV index in September - Fort Moultrie, 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
Fort Moultrie, SC

Average cloud cover in September - Fort Moultrie, SC
  • Average cloud cover in September: 28

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in September
Fort Moultrie, SC

Average visibility in September - Fort Moultrie, 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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Fort Moultrie, South Carolina, USA

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