Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's onset records an average high-temperature of a still hot 87.6°F (30.9°C), a near match to August's 91.8°F (33.2°C). September sees the temperature falling to a mean low of 71.8°F (22.1°C).Heat index
September's mean heat index is calculated to be an extremely hot 104°F (40°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in September is 77%.Rainfall
In Saint George, in September, it is raining for 18.9 days, with typically 3.15" (80mm) of accumulated precipitation. Throughout the year, there are 179.3 rainfall days, and 33.19" (843mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September in Saint George, sunrise is at 7:05 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm EDT.
Sunshine
In Saint George, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September in Saint George?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Saint George?
When are sunrise and sunset in September?
How many hours of sunshine does Saint George have in September?
How high is the UV index in September in Saint George?
Average temperature in September
Saint George, GA
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in September: 71.8°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).
Average pressure in September
Saint George, GA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Saint George, GA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Saint George, GA
- Average humidity in September: 77%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Saint George, GA
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is August (5.39").
The driest month (with the least rainfall) is November (1.34").
Average rainfall days in September
Saint George, GA
- Average rainfall days in September: 18.9 days
The month with the highest number of rainy days is August (25.7 days).
The month with the least rainy days is November (9 days).
Average snowfall days in September
Saint George, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Saint George, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Saint George, GA
- Average sunshine days in September: 7.7 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is August (3.8 days).
Average UV index in September
Saint George, GA
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in September
Saint George, GA
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 31).
Average visibility in September
Saint George, GA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
Saint George, Georgia, USA
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