September weather forecastJefferson Springs, TN
September
Weather in September
September, the first month of the autumn in Jefferson Springs, is also a moderately hot month, with an average temperature varying between 62.6°F (17°C) and 81.9°F (27.7°C).Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a hot 88°F (31.1°C) in August to a warm 81.9°F (27.7°C). During September nights, Jefferson Springs witnesses a consistent average temperature of 62.6°F (17°C).Heat index
In September, the average heat index is estimated at a hot 87.8°F (31°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In September, the average relative humidity is 74%.Rainfall
In September, the rain falls for 12.1 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 150.1 rainfall days, and 24.41" (620mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Jefferson Springs.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of September, in Jefferson Springs, sunrise is at 6:40 am and sunset at 6:30 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Jefferson Springs, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 24min
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 24min
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).
