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
As August transitions into September, Jefferson Springs sees a gentle drop in the average high-temperature, transitioning from a hot 88°F (31.1°C) to a moderately hot 81.9°F (27.7°C). Jefferson Springs experiences a mean temperature of 62.6°F (17°C) during September nights.Heat index
September's average heat index is computed to be a tropical 87.8°F (31°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Jefferson Springs, Tennessee, the average relative humidity in September is 74%.Rainfall
In Jefferson Springs, Tennessee, in September, during 12.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Jefferson Springs, during the entire year, the rain falls for 150.1 days and collects up to 24.41" (620mm) of precipitation.Snowfall
May through October are months without snowfall in Jefferson Springs.Daylight
In September, the average length of the day in Jefferson Springs is 12h and 23min.On the first day of September, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:30 pm CDT.
Sunshine
The average sunshine in September in Jefferson Springs is 8.4h.UV index
The average daily maximum UV index in September in Jefferson Springs, Tennessee, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the temperature in September in Jefferson Springs?
What is the average humidity in September in Jefferson Springs?
How much does it rain in Jefferson Springs in September?
When it does not snow in Jefferson Springs?
How many hours of daylight does Jefferson Springs have in September?
When are sunrise and sunset in September in Jefferson Springs?
How long on average sun shines in September in Jefferson Springs?
What is the UV index intensity in September in Jefferson Springs?
Average temperature in September
Jefferson Springs, TN
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 62.6°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in September
Jefferson Springs, TN
- 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 (29.97"Hg).
Average wind speed in September
Jefferson Springs, TN
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Jefferson Springs, TN
- Average humidity in September: 74%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are June, August and October (73%).
Average rainfall in September
Jefferson Springs, TN
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is November (1.38").
Average rainfall days in September
Jefferson Springs, TN
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.7 days).
Average snowfall in September
Jefferson Springs, TN
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Jefferson Springs, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 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
Jefferson Springs, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Jefferson Springs, TN
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Jefferson Springs, TN
- 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 February and December (UV index 2).
Average cloud cover in September
Jefferson Springs, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Jefferson Springs, TN
- 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).
Jefferson Springs, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location
