September weather forecast and climate
Jeffersonville, GA

The first month of the autumn, September, is still a warm month in Jeffersonville, Georgia, with average temperature fluctuating between 67.5°F (19.7°C) and 85.1°F (29.5°C).

Temperature

In Jeffersonville, the average high-temperature in September is almost the same as in August - a warm 85.1°F (29.5°C). The average low-temperature, in September, is 67.5°F (19.7°C).

Heat index

The average heat index in September is calculated to a hot 94.1°F (34.5°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. 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', 'felt air temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, 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 especially crucial for babies and toddlers. 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

The average relative humidity in Jeffersonville, Georgia, is 73%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

April through December are months without snowfall in Jeffersonville, Georgia.

Daylight

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

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index in Jeffersonville is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. 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 Jeffersonville?

The average high-temperature, in September, is 85.1°F (29.5°C), while the average low-temperature is 67.5°F (19.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, in September is evaluated at 94.1°F (34.5°C).

What is the average humidity in September in Jeffersonville?

The average relative humidity in September in Jeffersonville is 73%.

How much does it rain in Jeffersonville in September?

In Jeffersonville, Georgia, during September, the rain falls for 12.6 days and regularly aggregates up to 1.54" (39mm) of precipitation.

What is the driest month in Jeffersonville?

The month with the least rainfall in Jeffersonville is September when the rain falls for 12.6 days and typically collects 1.54" (39mm) of precipitation.

When it does not snow in Jeffersonville?

April through December are months without snowfall in Jeffersonville.

How many hours of daylight does Jeffersonville have in September?

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

How many hours of sunshine does Jeffersonville have in September?

The average sunshine in September in Jeffersonville, Georgia, is 8.6h.

What is the UV index reading in September in Jeffersonville?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Jeffersonville, GA
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (54.9°F).

  • Average low temperature in September: 67.5°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September - Jeffersonville, GA
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.98").

Average wind speed in September - Jeffersonville, GA
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are January and February (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September - Jeffersonville, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (76%).
Months with the lowest relative humidity are January, October and November (71%).

Average rainfall in September - Jeffersonville, GA
  • Average rainfall in September: 1.54"

The wettest months (with the highest rainfall) are August and December (2.8").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in September - Jeffersonville, GA
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (7.4 days).

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

The month with the highest snowfall is January (0.24").
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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

Months with the highest number of snowfall days are January and February (0.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September / Average sunshine in September - Jeffersonville, 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: 10.8h).
The month with the least sunshine is December (Average sunshine: 5.4h).

Average sunshine days in September - Jeffersonville, GA
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (9.6 days).

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

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

Average cloud cover in September - Jeffersonville, GA
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 28).

Average visibility in September - Jeffersonville, 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).