September weather forecastLone Mountain, TN
September
Weather in September
September, the first month of the autumn in Lone Mountain, is also a moderately hot month, with an average temperature varying between 78.6°F (25.9°C) and 57.2°F (14°C).Temperature
As August makes way for September, Lone Mountain's average high-temperature eases from a warm 84.7°F (29.3°C) to a still moderately hot 78.6°F (25.9°C). Lone Mountain usually reports an average low-temperature of 57.2°F (14°C) during the month of September.Humidity
In Lone Mountain, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Lone Mountain is September, when the rain falls for 13.9 days and typically collects 2.32" (59mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:18 pm EDT.
Sunshine
The average sunshine in September in Lone Mountain is 8.3h.UV index
In Lone Mountain, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lone Mountain, TN
- Average high temperature in September: 78.6°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in September
Lone Mountain, TN
- Average pressure in September: 30.04"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
Lone Mountain, TN
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Lone Mountain, TN
- Average humidity in September: 77%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Lone Mountain, TN
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is February (4.72").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in September
Lone Mountain, TN
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in September
Lone Mountain, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lone Mountain, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 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
Lone Mountain, 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 18min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Lone Mountain, TN
- Average sunshine days in September: 14 days
The month with the most sunshine days is October (16.7 days).
The months with the least sunshine days are February and July (10 days).
Average UV index in September
Lone Mountain, 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 January, February, November and December (UV index 2).
Average cloud cover in September
Lone Mountain, TN
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Lone Mountain, TN
- Average visibility in September: 5mi
The months with the highest visibility are June, August and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September, October and December (5mi).
