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 onset of September brings with it an average high-temperature of a warm 84.7°F (29.3°C), showing a negligible variation from the month before. In September, Greshamville encounters an average low-temperature of 64.9°F (18.3°C) during the night.Heat index
The heat index for September is computed to be a tropical 93.2°F (34°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In September, the average relative humidity is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 2.05" (52mm) of precipitation.Snowfall
In Greshamville, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 7:07 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:18 pm EDT.
Sunshine
In September, the average sunshine in Greshamville is 8.5h.UV index
In Greshamville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
What is the driest month?
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 Greshamville have in September?
How high is the UV index in September?
Average temperature in September
Greshamville, GA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in September
Greshamville, GA
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Greshamville, GA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Greshamville, 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
Greshamville, GA
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (4.65").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Greshamville, GA
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (20.9 days).
The months with the least rainy days are October and November (9 days).
Average snowfall in September
Greshamville, GA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Greshamville, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 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
Greshamville, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Greshamville, GA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (7.9 days).
Average UV index in September
Greshamville, GA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Greshamville, GA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Greshamville, GA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Greshamville, Georgia, USA
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