September weather forecastAcme Mill, TN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Acme Mill, Tennessee, with an average temperature fluctuating between 59.9°F (15.5°C) and 81.3°F (27.4°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a hot 86.9°F (30.5°C) to a warm 81.3°F (27.4°C). Acme Mill observes an average nighttime low-temperature of 59.9°F (15.5°C) during the month of September.Heat index
The heat index for September is estimated at a tropical 86°F (30°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The months with the lowest humidity are June through November, with an average relative humidity of 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 8.7 days and typically collects 0.79" (20mm) of precipitation.Snowfall
In Acme Mill, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:23 pm EDT.
Sunshine
In Acme Mill, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Acme Mill, TN
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Acme Mill, TN
- Average pressure in September: 30.03"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
Acme Mill, TN
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity in September
Acme Mill, TN
- Average humidity in September: 75%
The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are June, July, August, September, October and November (75%).
Average rainfall in September
Acme Mill, TN
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (2.09").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in September
Acme Mill, TN
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in September
Acme Mill, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Acme Mill, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.5 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
Acme Mill, TN
- Average daylight in September: 12h and 24min
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 48min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Acme Mill, TN
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (15.3 days).
Average UV index in September
Acme Mill, 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 and December (UV index 2).
Average cloud cover in September
Acme Mill, TN
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Acme Mill, TN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
