Hartsfield
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hartsfield, GA

September, the first month of the autumn, in Hartsfield, is also a moderately hot month, with average temperature ranging between min 68.9°F (20.5°C) and max 85.6°F (29.8°C).

Temperature

In Hartsfield, Georgia, the average high-temperature in September is essentially the same as in August - a warm 85.6°F (29.8°C). In Hartsfield, the average low-temperature is 68.9°F (20.5°C).

Heat index

The average heat index is estimated at a very hot 97.3°F (36.3°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 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, differences in body mass, height, and shape), and activity. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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

In Hartsfield, the average relative humidity in September is 77%.

Rainfall

In Hartsfield, in September, during 15 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, in Hartsfield, there are 145.6 rainfall days, and 15.94" (405mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Hartsfield.

Daylight

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

Sunshine

The average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in Hartsfield is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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 Hartsfield?

In Hartsfield, Georgia, in September, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 68.9°F (20.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), that combines relative humidity and air temperature, in September is estimated at 97.3°F (36.3°C).

What is the average humidity in September in Hartsfield?

In September, the average relative humidity in Hartsfield is 77%.

How much does it rain in Hartsfield in September?

In Hartsfield, Georgia, in September, it is raining for 15 days, with typically 1.26" (32mm) of accumulated precipitation.

When it does not snow in Hartsfield?

In Hartsfield, Georgia, snow does not fall in February through December.

How many hours of daylight does Hartsfield have in September?

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

How many hours of sunshine does Hartsfield have in September?

In September, the average sunshine in Hartsfield is 8.8h.

How high is the UV index in September in Hartsfield?

In September, the average daily maximum UV index in Hartsfield, Georgia, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Hartsfield, GA
  • Average high temperature in September: 85.6°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in September: 68.9°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).

Average humidity in September - Hartsfield, GA
  • Average humidity in September: 77%

The month with the highest relative humidity is August (78%).
Months with the lowest relative humidity are May and November (71%).

Average rainfall in September - Hartsfield, GA
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is June (2.4").
The driest month (with the least rainfall) is November (0.59").

Average rainfall days in September - Hartsfield, GA
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is August (22 days).
The month with the least rainy days is November (5.9 days).

Average snowfall in September - Hartsfield, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.08").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September - Hartsfield, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Hartsfield, 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: 8.8h

Months with the most sunshine are June and July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.6h).

Average UV index in September - Hartsfield, GA
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).