September weather forecast and climate
East Griffin, GA

The first month of the autumn, September, is still a warm month in East Griffin, Georgia, with average temperature fluctuating between 65.5°F (18.6°C) and 84°F (28.9°C).

Temperature

In East Griffin, the average high-temperature in September is practically the same as in August - a warm 84°F (28.9°C). The average low-temperature, in September, is 65.5°F (18.6°C).

Heat index

The average heat index is estimated at a tropical 91.6°F (33.1°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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like pregnancy, differences in body mass, height, and shape, metabolic differences, and activity influence one's weather impression. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity is 73%.

Rainfall

In September, the rain falls for 13.8 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 179.6 rainfall days, and 39.84" (1012mm) of precipitation is accumulated.

Snowfall

In East Griffin snow does not fall in April through October.

Daylight

In East Griffin, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in East Griffin?

In East Griffin, in September, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 65.5°F (18.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines relative humidity and air temperature, is estimated at 91.6°F (33.1°C).

What is the average humidity in September in East Griffin?

The average relative humidity in September is 73%.

How many days does it rain in September in East Griffin?

In September, in East Griffin, Georgia, the rain falls for 13.8 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in East Griffin?

In East Griffin snow does not fall in April through October.

What is the average length of the day in September in East Griffin?

The average length of the day in September in East Griffin is 12.4h.

How many hours of sunshine does East Griffin have in September?

In September, the average sunshine in East Griffin, Georgia, is 8.5h.

How high is the UV index in September in East Griffin?

The average daily maximum UV index in September in East Griffin is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in September - East Griffin, GA
  • Average high temperature in September: 84°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (52.2°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).

Average pressure in September - East Griffin, GA
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.99").

Average wind speed in September - East Griffin, GA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in September - East Griffin, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (78%).
Months with the lowest relative humidity are October and November (72%).

Average rainfall in September - East Griffin, GA
  • Average rainfall in September: 2.44"

The wettest month (with the highest rainfall) is August (4.61").
The driest month (with the least rainfall) is October (2.09").

Average rainfall days in September - East Griffin, GA
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is October (9.3 days).

Average snowfall in September - East Griffin, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.47").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - East Griffin, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - East Griffin, GA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is December (Average sunshine: 5.1h).

Average sunshine days in September - East Griffin, GA
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (7.4 days).

Average UV index in September - East Griffin, GA
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in September - East Griffin, GA
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 45).
Months with the least cloud cover are June, September and October (Cloud cover 31).

Average visibility in September - East Griffin, GA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).