September weather forecast
Rocky Waters, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Rocky Waters, Tennessee, with an average temperature ranging between min 59.9°F (15.5°C) and max 81.1°F (27.3°C).

Temperature

The advent of September brings a slight shift in average high-temperature, moving from a tropical 86.7°F (30.4°C) in August to a warm 81.1°F (27.3°C). In September, Rocky Waters records an average nighttime temperature of 59.9°F (15.5°C).

Heat index

September's heat index is evaluated at a hot 86°F (30°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. 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. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In September, the average relative humidity is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 0.94" (24mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

In Rocky Waters, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:08 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:20 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

The average high-temperature and low-temperature during September are 81.1°F (27.3°C) and 59.9°F (15.5°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 74%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 0.94" (24mm) of precipitation.

How many days does it rain in September?

In Rocky Waters, in September, it is raining for 10.6 days, with typically 0.94" (24mm) of accumulated precipitation.

When it does not snow?

In Rocky Waters, snow does not fall in April through September.

Does it snow in September?

In Rocky Waters, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Rocky Waters have in September?

In September, the average day length is 12h and 23min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:08 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:20 pm EDT.

How many hours of sunshine does Rocky Waters have in September?

In September, the average sunshine duration is 8.7h.

What is the UV index intensity in September?

In Rocky Waters, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Rocky Waters, TN

Average temperature in September - Rocky Waters, TN
  • Average high temperature in September: 81.1°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 (44.8°F).

  • Average low temperature in September: 59.9°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 (29.5°F).

Average pressure in September
Rocky Waters, TN

Average pressure in September - Rocky Waters, 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
Rocky Waters, TN

Average wind speed in September - Rocky Waters, TN
  • Average wind speed in September: 3.8mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in September
Rocky Waters, TN

Average humidity in September - Rocky Waters, TN
  • Average humidity in September: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).

Average rainfall in September
Rocky Waters, TN

Average rainfall in September - Rocky Waters, TN
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is September (0.94").

Average rainfall days in September
Rocky Waters, TN

Average rainfall days in September - Rocky Waters, TN
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in September
Rocky Waters, TN

Average snowfall in September - Rocky Waters, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in September
Rocky Waters, TN

Average snowfall days in September - Rocky Waters, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.4 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
Rocky Waters, TN

Average daylight in September / Average sunshine in September - Rocky Waters, TN
  • Average daylight in September: 12h and 2min

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 48min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in September
Rocky Waters, TN

Average sunshine days in September - Rocky Waters, TN
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are February and July (12.5 days).

Average UV index in September
Rocky Waters, TN

Average UV index in September - Rocky Waters, 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
Rocky Waters, TN

Average cloud cover in September - Rocky Waters, TN
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in September
Rocky Waters, TN

Average visibility in September - Rocky Waters, TN
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).

Rocky Waters, Tennessee, USA

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