September weather forecast
Altamaha Park, GA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Altamaha Park, Georgia, with an average temperature ranging between min 72.5°F (22.5°C) and max 85.6°F (29.8°C).

Temperature

Altamaha Park signifies an average high-temperature of a moderately hot 85.6°F (29.8°C) in September, closely mirroring the 90.1°F (32.3°C) of August. During September, Altamaha Park sees a mean low-temperature of 72.5°F (22.5°C).

Heat index

September's average heat index is estimated at a torrid 96.8°F (36°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Altamaha Park, during September, the rain falls for 14.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Altamaha Park, during the entire year, the rain falls for 155.7 days and collects up to 26.57" (675mm) of precipitation.

Snowfall

In Altamaha Park, snow does not fall in January, March through November.

Daylight

In Altamaha Park, the average length of the day in September is 12h and 21min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:12 pm EDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

In September, in Altamaha Park, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 72.5°F (22.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 96.8°F (36°C).

What is the average humidity in September?

In September, the average relative humidity is 77%.

How many days does it rain in September?

In Altamaha Park, in September, it is raining for 14.8 days, with typically 2.4" (61mm) of accumulated precipitation.

When it does not snow?

In Altamaha Park, snow does not fall in January, March through November.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:02 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:12 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.6h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents 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
Altamaha Park, GA

Average temperature in September - Altamaha Park, GA
  • Average high temperature in September: 85.6°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (59.7°F).

  • Average low temperature in September: 72.5°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).

Average pressure in September
Altamaha Park, GA

Average pressure in September - Altamaha Park, GA
  • Average pressure in September: 29.98"Hg

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

Average wind speed in September
Altamaha Park, GA

Average wind speed in September - Altamaha Park, GA
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Altamaha Park, GA

Average humidity in September - Altamaha Park, GA
  • Average humidity in September: 77%

The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is March (72%).

Average rainfall in September
Altamaha Park, GA

Average rainfall in September - Altamaha Park, GA
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in September
Altamaha Park, GA

Average rainfall days in September - Altamaha Park, GA
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is August (20 days).
The month with the least rainy days is November (7.9 days).

Average snowfall days in September
Altamaha Park, GA

Average snowfall days in September - Altamaha Park, GA
  • Average snowfall days in September: 0 days

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

Average daylight in September /
Average sunshine in September
Altamaha Park, GA

Average daylight in September / Average sunshine in September - Altamaha Park, 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 4min

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 36min).

Average sunshine days in September
Altamaha Park, GA

Average sunshine days in September - Altamaha Park, GA
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is August (8.4 days).

Average UV index in September
Altamaha Park, GA

Average UV index in September - Altamaha Park, 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
Altamaha Park, GA

Average cloud cover in September - Altamaha Park, GA
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in September
Altamaha Park, GA

Average visibility in September - Altamaha Park, 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).

Altamaha Park, Georgia, USA

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