September weather forecast
Fort Stewart, GA

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Weather in September

The first month of the autumn, September, is also a hot month in Fort Stewart, Georgia, with an average temperature fluctuating between 70°F (21.1°C) and 86.9°F (30.5°C).

Temperature

Fort Stewart registers an average high-temperature of a still tropical 86.9°F (30.5°C) at the commencement of September, closely related to the preceding month. Fort Stewart encounters a steady low-temperature average of 70°F (21.1°C) throughout the month of September.

Heat index

September's average heat index is calculated to be a torrid 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The months with the highest humidity are August, September and December, with an average relative humidity of 77%.

Rainfall

In Fort Stewart, during September, the rain falls for 16.4 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, in Fort Stewart, there are 167.6 rainfall days, and 31.22" (793mm) of precipitation is accumulated.

Snowfall

In Fort Stewart, snow does not fall in February through December.

Daylight

In Fort Stewart, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

Sunshine

In Fort Stewart, the average sunshine in September is 8.5h.

UV index

In Fort Stewart, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during September leads to these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

Is it hot in Fort Stewart during September?

In September, in Fort Stewart, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 70°F (21.1°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 100.4°F (38°C).

What is the most humid month in Fort Stewart?

August, September and December, with an average relative humidity of 77%, are most humid months.

What is the average humidity in September?

In Fort Stewart, Georgia, the average relative humidity in September is 77%.

How much does it rain in September?

In Fort Stewart, during September, the rain falls for 16.4 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow?

In Fort Stewart, snow does not fall in February through December.

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

The average day length in September is 12h and 21min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.5h.

What is the UV index reading in September in Fort Stewart?

In Fort Stewart, the average daily maximum UV index in September is 6. A UV Index reading 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
Fort Stewart, GA

Average temperature in September - Fort Stewart, GA
  • Average high temperature in September: 86.9°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 (58.6°F).

  • Average low temperature in September: 70°F

The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).

Average pressure in September
Fort Stewart, GA

Average pressure in September - Fort Stewart, GA
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

Average wind speed in September
Fort Stewart, GA

Average wind speed in September - Fort Stewart, GA
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in September
Fort Stewart, GA

Average humidity in September - Fort Stewart, GA
  • Average humidity in September: 77%

The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is January (71%).

Average rainfall in September
Fort Stewart, GA

Average rainfall in September - Fort Stewart, GA
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is August (4.25").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in September
Fort Stewart, GA

Average rainfall days in September - Fort Stewart, GA
  • Average rainfall days in September: 16.4 days

The month with the highest number of rainy days is August (23.7 days).
The month with the least rainy days is November (7.1 days).

Average snowfall in September
Fort Stewart, GA

Average snowfall in September - Fort Stewart, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Fort Stewart, GA

Average snowfall days in September - Fort Stewart, GA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Fort Stewart, GA

Average daylight in September / Average sunshine in September - Fort Stewart, GA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Fort Stewart, GA

Average sunshine days in September - Fort Stewart, GA
  • Average sunshine days in September: 11.8 days

The months with the most sunshine days are January and November (20.3 days).
The month with the least sunshine days is August (5.1 days).

Average UV index in September
Fort Stewart, GA

Average UV index in September - Fort Stewart, GA
  • 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).

Average cloud cover in September
Fort Stewart, GA

Average cloud cover in September - Fort Stewart, GA
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are July and October (Cloud cover 30).

Average visibility in September
Fort Stewart, GA

Average visibility in September - Fort Stewart, GA
  • 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).

Fort Stewart, Georgia, USA

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