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
A subtle shift in Chattanooga Valley's weather is observed as August turns into September, with the average high temperature reducing from a tropical 87.6°F (30.9°C) to a warm 81.9°F (27.7°C). An average low-temperature of 61°F (16.1°C) marks the month of September in Chattanooga Valley, Georgia.Heat index
In September, the heat index is appraised at a tropical 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. 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 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 12.8 days and accumulates 2.56" (65mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Chattanooga Valley is 12h and 23min.On the first day of September, sunrise is at 7:14 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:26 pm EDT.
Sunshine
In September, the average sunshine in Chattanooga Valley is 8.4h.UV index
In Chattanooga Valley, Georgia, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Chattanooga Valley in September?
What is the average humidity in September in Chattanooga Valley?
What is the driest month in Chattanooga Valley?
How many days does it rain in September in Chattanooga Valley?
When it does not snow in Chattanooga Valley?
How many hours of daylight does Chattanooga Valley have in September?
When are sunrise and sunset in September in Chattanooga Valley?
How many hours of sunshine does Chattanooga Valley have in September?
What is the UV index reading in September in Chattanooga Valley?
Average temperature in September
Chattanooga Valley, GA
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in September
Chattanooga Valley, GA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Chattanooga Valley, GA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is February (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Chattanooga Valley, GA
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).
Average rainfall in September
Chattanooga Valley, GA
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is September (2.56").
Average rainfall days in September
Chattanooga Valley, GA
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Chattanooga Valley, GA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Chattanooga Valley, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.5 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
Chattanooga Valley, 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 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Chattanooga Valley, GA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in September
Chattanooga Valley, 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 and December (UV index 2).
Average cloud cover in September
Chattanooga Valley, GA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Chattanooga Valley, 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).
Chattanooga Valley, Georgia, USA
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