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
September's weather records an average high-temperature of a still moderately hot 78.4°F (25.8°C), showing little deviation from August. Clayton registers a consistent average low-temperature of 58.1°F (14.5°C) during September.Humidity
The average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 15.5 days and accumulates 2.83" (72mm) of precipitation.Snowfall
May through October are months without snowfall in Clayton.Daylight
In Clayton, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:06 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:18 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Clayton, Georgia, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in Clayton in September?
When it does not snow?
How many hours of daylight does Clayton have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Clayton have in September?
What is the UV index intensity in September?
Average temperature in September
Clayton, GA
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in September
Clayton, GA
- Average pressure in September: 30.04"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
Clayton, GA
- Average wind speed in September: 3.9mph
The windiest months (with the highest average wind speed) are February and April (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Clayton, GA
- Average humidity in September: 77%
The months with the highest relative humidity are February, May and December (79%).
The months with the lowest relative humidity are January and November (75%).
Average rainfall in September
Clayton, GA
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is December (5").
The driest month (with the least rainfall) is September (2.83").
Average rainfall days in September
Clayton, GA
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in September
Clayton, GA
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Clayton, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Clayton, GA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Clayton, GA
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Clayton, GA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Clayton, GA
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Clayton, GA
- Average visibility in September: 5mi
The months with the highest visibility are June and July (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October, November and December (5mi).
Clayton, Georgia, USA
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