Green Hills
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Green Hills, GA

September, the first month of the autumn, in Green Hills, is also a moderately hot month, with average temperature fluctuating between 62.6°F (17°C) and 82.8°F (28.2°C).

Temperature

In Green Hills, Georgia, the average high-temperature is practically the same as in August - a warm 82.8°F (28.2°C). In Green Hills, in September, the average low-temperature is 62.6°F (17°C).

Heat index

In September, the average heat index is appraised at a hot 88.9°F (31.6°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like clothing, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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.

Humidity

In Green Hills, the average relative humidity in September is 74%.

Rainfall

In Green Hills, during 13.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 181.4 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Green Hills, Georgia.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Green Hills is 8.5h.

UV index

The average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Green Hills?

In September, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 62.6°F (17°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines both air temperature and relative humidity, is estimated at 88.9°F (31.6°C).

What is the average humidity in September in Green Hills?

In September, the average relative humidity in Green Hills is 74%.

How many days does it rain in September in Green Hills?

In Green Hills, Georgia, in September, during 13.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow in Green Hills?

April through October are months without snowfall.

What is the average length of the day in September in Green Hills?

In September, the average length of the day in Green Hills is 12.4h.

How long on average sun shines in September in Green Hills?

In Green Hills, the average sunshine in September is 8.5h.

What is the UV index intensity in September in Green Hills?

In Green Hills, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Green Hills, GA
  • Average high temperature in September: 82.8°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (48.6°F).

  • Average low temperature in September: 62.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average humidity in September - Green Hills, GA
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
Months with the lowest relative humidity are July, August, October and November (73%).

Average rainfall in September - Green Hills, GA
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is December (4.25").
The driest month (with the least rainfall) is October (2.36").

Average rainfall days in September - Green Hills, GA
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is October (10.1 days).

Average snowfall in September - Green Hills, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1.54").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Green Hills, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 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 - Green Hills, GA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • 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: 5.2h).

Average UV index in September - Green Hills, GA
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).