September weather forecast and climate
Federal Hills, GA

September, the first month of the autumn, in Federal Hills, is also a moderately hot month, with average temperature ranging between min 65.5°F (18.6°C) and max 84.6°F (29.2°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a moderately hot 84.6°F (29.2°C). In September, the average low-temperature is 65.5°F (18.6°C).

Heat index

In September, the average heat index is evaluated at a hot 93.2°F (34°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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', 'feels like', 'real feel', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, pregnancy). 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 74%.

Rainfall

In Federal Hills, Georgia, in September, during 12.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 153.7 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

In Federal Hills snow does not fall in April through November.

Daylight

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

Sunshine

In September, the average sunshine in Federal Hills 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 threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 Federal Hills?

The average high-temperature, in September, is 84.6°F (29.2°C), while the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), that combines air temperature and relative humidity, in September is estimated at 93.2°F (34°C).

What is the average humidity in September in Federal Hills?

The average relative humidity in September in Federal Hills is 74%.

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

In Federal Hills, Georgia, during September, the rain falls for 12.5 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow in Federal Hills?

April through November are months without snowfall in Federal Hills.

How many hours of daylight does Federal Hills have in September?

The average length of the day in September in Federal Hills is 12.4h.

How many hours of sunshine does Federal Hills have in September?

The average sunshine in September in Federal Hills is 8.5h.

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

In September, the average daily maximum UV index in Federal Hills, Georgia, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Federal Hills, GA
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (52.7°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (36.7°F).

Average pressure in September - Federal Hills, GA
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in September - Federal Hills, GA
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are January and February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September - Federal Hills, GA
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is October (1.3").

Average rainfall days in September - Federal Hills, GA
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is October (7.6 days).

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

The month with the highest snowfall is January (0.31").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (0.9 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Federal Hills, 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: 10.4h).
The month with the least sunshine is December (Average sunshine: 5h).

Average sunshine days in September - Federal Hills, GA
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is July (8.6 days).

Average UV index in September - Federal Hills, 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 and December (UV index 3).

Average cloud cover in September - Federal Hills, GA
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 32).

Average visibility in September - Federal Hills, GA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are July and August (5mi).