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
During the shift to September, Mount Cumberland records a mild decrease in average high-temperature, moving from a hot 86.9°F (30.5°C) in August to a warm 81.3°F (27.4°C). Nightly temperatures drop to an average low of 59.9°F (15.5°C) in September.Heat index
September's heat index is evaluated at a tropical 86°F (30°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
June through November, with an average relative humidity of 75%, are the least humid months.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
April through October are months without snowfall.Daylight
In Mount Cumberland, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:23 pm EDT.
Sunshine
The average sunshine in September in Mount Cumberland is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. 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
What is the usual temperature for Mount Cumberland in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, TN
- Average daylight in September: 12h and 2min
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 4min
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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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
Mount Cumberland, 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).
Mount Cumberland, Tennessee, USA
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