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 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
The arrival of September coincides with an average high-temperature of a moderately hot 84.7°F (29.3°C), indicating a minimal shift from August's 89.2°F (31.8°C). Glynn Isles's average low-temperature in September is measured at an enjoyable 64.9°F (18.3°C).Heat index
During September, the heat index is appraised at a tropical 93.2°F (34°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Glynn Isles, the average relative humidity in September is 73%.Rainfall
In Glynn Isles, in September, it is raining for 10.2 days, with typically 0.79" (20mm) of accumulated precipitation. In Glynn Isles, during the entire year, the rain falls for 132.6 days and collects up to 14.41" (366mm) of precipitation.Snowfall
In Glynn Isles, snow does not fall in March through December.Daylight
In Glynn Isles, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 5 in September transforms into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Glynn Isles during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Glynn Isles have in September?
What is the UV index reading in September?
Average temperature in September
Glynn Isles, GA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in September
Glynn Isles, GA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Glynn Isles, GA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Glynn Isles, GA
- Average humidity in September: 73%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are October and November (72%).
Average rainfall in September
Glynn Isles, GA
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is October (0.75").
Average rainfall days in September
Glynn Isles, GA
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is November (6 days).
Average snowfall in September
Glynn Isles, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Glynn Isles, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Glynn Isles, GA
- Average daylight in September: 12h and 2min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Glynn Isles, GA
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is October (22.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Glynn Isles, GA
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Glynn Isles, GA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in September
Glynn Isles, 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).
Glynn Isles, Georgia, USA
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