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
In September, the average high-temperature marginally drops from a tropical 86.4°F (30.2°C) in August to a warm 81°F (27.2°C). Graysville's nighttime temperature in September drops to an average of 59.7°F (15.4°C).Heat index
The heat index in September is appraised at a hot 86°F (30°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
The months with the lowest humidity are January, June through November, with an average relative humidity of 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.7 days and typically collects 1.77" (45mm) of precipitation.Snowfall
In Graysville, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:35 am and sunset at 7:25 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Graysville have in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Graysville?
What is the UV index reading in September in Graysville?
Average temperature in September
Graysville, GA
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in September
Graysville, GA
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Graysville, GA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).
Average humidity in September
Graysville, GA
- Average humidity in September: 76%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).
Average rainfall in September
Graysville, GA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Graysville, GA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Graysville, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Graysville, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Graysville, 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 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Graysville, GA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Graysville, GA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Graysville, GA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Graysville, GA
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Graysville, Georgia, USA
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