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

September weather forecast and climate
Harlem, GA

September, the first month of the autumn, in Harlem, is still a warm month, with average temperature varying between 85.6°F (29.8°C) and 67.1°F (19.5°C).

Temperature

In September, the average high-temperature is almost the same as in August - a moderately hot 85.6°F (29.8°C). The average low-temperature, in Harlem, is 67.1°F (19.5°C).

Heat index

The average heat index is evaluated at a hot 94.6°F (34.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'real feel', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, clothing), 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. 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 September, the average relative humidity in Harlem is 71%.

Rainfall

The month with the least rainfall in Harlem is September when the rain falls for 13.5 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Harlem snow does not fall in April through November.

Daylight

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

Sunshine

The average sunshine in September is 8.6h.

UV index

In Harlem, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Harlem?

The average high-temperature, in September, is 85.6°F (29.8°C), while the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that represents influence of the relative humidity to air temperaure, is appraised at 94.6°F (34.8°C).

What is the average humidity in September in Harlem?

The average relative humidity in September in Harlem, Georgia, is 71%.

How many days does it rain in September in Harlem?

In Harlem, in September, it is raining for 13.5 days, with typically 1.93" (49mm) of accumulated precipitation.

What is the driest month in Harlem?

September is the month with the least rainfall in Harlem. Rain falls for 13.5 days and accumulates 1.93" (49mm) of precipitation.

When it does not snow in Harlem?

April through November are months without snowfall in Harlem, Georgia.

What is the average length of the day in September in Harlem?

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

How many hours of sunshine does Harlem have in September?

In Harlem, the average sunshine in September is 8.6h.

How high is the UV index in September in Harlem?

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

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.6°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).

Average humidity in September - Harlem, GA
  • Average humidity in September: 71%

The month with the highest relative humidity is December (76%).
Months with the lowest relative humidity are July and November (70%).

Average rainfall in September - Harlem, GA
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September - Harlem, GA
  • Average rainfall days in September: 13.5 days

Months with the highest number of rainy days are July and August (19.5 days).
The month with the least rainy days is November (8.7 days).

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

The month with the highest snowfall is January (0.35").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (0.8 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 - Harlem, 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: 8.6h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.4h).

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

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