September weather forecast
Shackle Island, TN

Share

Weather in September

September, the first month of the autumn in Shackle Island, is still a warm month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 62.2°F (16.8°C).

Temperature

The arrival of September corresponds with a light shift in temperature, down from a hot 86.7°F (30.4°C) in August to a warm 81.1°F (27.3°C). In September, Shackle Island records an average nighttime temperature of 62.2°F (16.8°C).

Heat index

September's heat index is evaluated at a tropical 86°F (30°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

The average relative humidity in September in Shackle Island is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 14.6 days and accumulates 2.36" (60mm) of precipitation.

Snowfall

In Shackle Island, snow does not fall in May through October.

Daylight

In Shackle Island, Tennessee, the average length of the day in September is 12h and 24min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

Sunshine

In Shackle Island, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Shackle Island is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 5 in September transforms into this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
[Resources]

Frequently asked questions

What are September temperatures in Shackle Island?

In Shackle Island, in September, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 62.2°F (16.8°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

What is the average humidity in September in Shackle Island?

In Shackle Island, Tennessee, the average relative humidity in September is 74%.

What is the driest month in Shackle Island?

The month with the least rainfall is September, when the rain falls for 14.6 days and typically collects 2.36" (60mm) of precipitation.

How much does it rain in Shackle Island in September?

In Shackle Island, during September, the rain falls for 14.6 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow in Shackle Island?

In Shackle Island, snow does not fall in May through October.

What is the average length of the day in September in Shackle Island?

In Shackle Island, the average day length in September is 12h and 24min.

When is the sunrise / sunset in September in Shackle Island?

On the first day of September, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

How long on average sun shines in September in Shackle Island?

In September, the average sunshine duration in Shackle Island is 8.5h.

How high is the UV index in September in Shackle Island?

In September, the average daily maximum UV index in Shackle Island is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Shackle Island, TN

Average temperature in September - Shackle Island, TN
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (43.9°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

[Resources]

Average pressure in September
Shackle Island, TN

Average pressure in September - Shackle Island, TN
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

[Resources]

Average wind speed in September
Shackle Island, TN

Average wind speed in September - Shackle Island, TN
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

[Resources]

Average humidity in September
Shackle Island, TN

Average humidity in September - Shackle Island, TN
  • Average humidity in September: 74%

The months with the highest relative humidity are March and December (78%).
The month with the lowest relative humidity is October (73%).

[Resources]

Average rainfall in September
Shackle Island, TN

Average rainfall in September - Shackle Island, TN
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is July (4.45").
The driest month (with the least rainfall) is September (2.36").

[Resources]

Average rainfall days in September
Shackle Island, TN

Average rainfall days in September - Shackle Island, TN
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.4 days).

[Resources]

Average snowfall in September
Shackle Island, TN

Average snowfall in September - Shackle Island, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Shackle Island, TN

Average snowfall days in September - Shackle Island, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Shackle Island, TN

Average daylight in September / Average sunshine in September - Shackle Island, 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 42min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days in September
Shackle Island, TN

Average sunshine days in September - Shackle Island, TN
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (9.2 days).

[Resources]

Average UV index in September
Shackle Island, TN

Average UV index in September - Shackle Island, 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).

[Resources]

Average cloud cover in September
Shackle Island, TN

Average cloud cover in September - Shackle Island, TN
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 29).

[Resources]

Average visibility in September
Shackle Island, TN

Average visibility in September - Shackle Island, TN
  • Average visibility in September: 6mi

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

[Resources]

Shackle Island, Tennessee, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location