September weather forecastBluff City, TN
September
Weather in September
September, the first month of the autumn in Bluff City, is still a warm month, with an average temperature varying between 54.9°F (12.7°C) and 78.1°F (25.6°C).Temperature
August's transformation into September witnesses an average high-temperature of a still moderately hot 78.1°F (25.6°C), noting a minor change from the preceding month. Bluff City encounters a substantial decline from its daily high to a low-temperature of 54.9°F (12.7°C) during September nights.Humidity
In September, the average relative humidity in Bluff City is 76%.Rainfall
The month with the least rainfall in Bluff City is September, when the rain falls for 13 days and typically collects 1.18" (30mm) of precipitation.Snowfall
In Bluff City, Tennessee, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of September in Bluff City, Tennessee, sunrise is at 7:00 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:13 pm EDT.
Sunshine
In Bluff City, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September in Bluff City is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take precautions - Protection against skin and eye damage is obliged. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. 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
Average temperature in September
Bluff City, TN
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in September
Bluff City, TN
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Bluff City, TN
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Bluff City, TN
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are July, August and November (75%).
Average rainfall in September
Bluff City, TN
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in September
Bluff City, TN
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Bluff City, TN
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bluff City, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bluff City, 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 42min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Bluff City, TN
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Bluff City, TN
- Average UV index in September: 4
The months with the highest UV index are 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
Bluff City, TN
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Bluff City, TN
- Average visibility in September: 5mi
The months with the highest visibility are April, July, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and December (5mi).
