Fort Stewart
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Fort Stewart, GA

September, the first month of the autumn, in Fort Stewart, is still a hot month, with average temperature ranging between min 70°F (21.1°C) and max 86.9°F (30.5°C).

Temperature

In September, the average high-temperature is practically the same as in August - a still hot 86.9°F (30.5°C). In Fort Stewart, Georgia, the average low-temperature is 70°F (21.1°C).

Heat index

The average heat index is estimated at a torrid 100.9°F (38.3°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, metabolic differences, clothing, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

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

Rainfall

In Fort Stewart, in September, during 16.4 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 167.6 rainfall days, and 31.22" (793mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Fort Stewart.

Daylight

In Fort Stewart, the average length of the day in September is 12.3h.

Sunshine

In Fort Stewart, the average sunshine is 8.5h.

UV index

In Fort Stewart, Georgia, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Fort Stewart?

In September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 70°F (21.1°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, in September is appraised at 100.9°F (38.3°C).

What is the most humid month in Fort Stewart?

Months with the highest humidity in Fort Stewart are August, September and December, with an average relative humidity of 77%.

What is the average humidity in September in Fort Stewart?

In September, the average relative humidity is 77%.

How many days does it rain in September in Fort Stewart?

In September, in Fort Stewart, the rain falls for 16.4 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

When it does not snow in Fort Stewart?

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

How many hours of daylight does Fort Stewart have in September?

In Fort Stewart, Georgia, the average length of the day in September is 12.3h.

How many hours of sunshine does Fort Stewart have in September?

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

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

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
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 humidity in September - Fort Stewart, GA
  • Average humidity in September: 77%

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: 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: 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: 0"

The month with the highest snowfall is January (0.04").
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: 0 days

Months with the highest number of snowfall days are January, February and December (0.1 days).
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: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.4h).

Average UV index in September - Fort Stewart, GA
  • Average UV index in September: 6

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).