September weather forecastOld Chimney, GA
September
Weather in September
The first month of the autumn, September, is still a warm month in Old Chimney, Georgia, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 66°F (18.9°C).Temperature
The advent of September denotes an average high-temperature of a moderately hot 85.3°F (29.6°C), subtly different from August's 89.8°F (32.1°C). Nighttime temperatures hover around an average low of 66°F (18.9°C) in September.Heat index
The heat index in September is appraised at a sweltering 95°F (35°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Consider that heat index readings are for situations in the shade and light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In September, the average relative humidity in Old Chimney is 73%.Rainfall
In September, in Old Chimney, the rain falls for 12.5 days. Throughout September, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Old Chimney, there are 152.9 rainfall days, and 22.2" (564mm) of precipitation is accumulated.Snowfall
In Old Chimney, snow does not fall in March through December.Daylight
In Old Chimney, Georgia, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:15 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:25 pm EDT.
Sunshine
In Old Chimney, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 6 in September transforms into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Old Chimney, GA
- Average high temperature in September: 85.3°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 (53.2°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Old Chimney, GA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Old Chimney, GA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Old Chimney, GA
- Average humidity in September: 73%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Old Chimney, GA
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is October (1.3").
Average rainfall days in September
Old Chimney, GA
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Old Chimney, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Old Chimney, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 days).
The 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
Old Chimney, GA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Old Chimney, GA
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in September
Old Chimney, GA
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Old Chimney, GA
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 46).
The months with the least cloud cover are September and October (Cloud cover 31).
Average visibility in September
Old Chimney, GA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





