September weather forecastSentinel Heights, TN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Sentinel Heights, Tennessee, with an average temperature fluctuating between 59.4°F (15.2°C) and 80.6°F (27°C).Temperature
Sentinel Heights's September weather shows a modest shift in high-temperatures, falling from August's tropical 86.5°F (30.3°C) to a warm 80.6°F (27°C). The mean low-temperature during September nights is a moderate 59.4°F (15.2°C).Heat index
The heat index for September is estimated at 84.2°F (29°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Know that the heat index computations account for shaded terrains and slight winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
January, June through November, with an average relative humidity of 76%, are the least humid months in Sentinel Heights.Rainfall
In Sentinel Heights, in September, it is raining for 12.6 days, with typically 2.4" (61mm) of accumulated precipitation. In Sentinel Heights, during the entire year, the rain falls for 163.6 days and collects up to 37.44" (951mm) of precipitation.Snowfall
In Sentinel Heights, snow does not fall in May through October.Daylight
In September, the average length of the day in Sentinel Heights is 12h and 23min.On the first day of September in Sentinel Heights, sunrise is at 7:12 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:24 pm EDT.
Sunshine
In Sentinel Heights, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sentinel Heights, TN
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Sentinel Heights, 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
Sentinel Heights, TN
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity in September
Sentinel Heights, TN
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).
Average rainfall in September
Sentinel Heights, TN
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Sentinel Heights, TN
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Sentinel Heights, TN
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Sentinel Heights, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sentinel Heights, 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 12min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Sentinel Heights, TN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Sentinel Heights, 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
Sentinel Heights, TN
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Sentinel Heights, TN
- Average visibility in September: 5mi
The months with the highest visibility are February, June, October and November (6mi).
The months with the lowest visibility are January, March, April, May, July, August, September and December (5mi).
