September weather forecast
Harris, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Harris, Tennessee, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 62.4°F (16.9°C).

Temperature

Harris's progression into September involves a minor drop in the average high-temperature, slightly receding from a hot 86.9°F (30.5°C) in August to a moderately hot 81.5°F (27.5°C). The average low-temperature of 62.4°F (16.9°C) is witnessed during September.

Heat index

In September, the average heat index is calculated to be a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

In Harris, the average relative humidity in September is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.61" (41mm) of precipitation.

Snowfall

In Harris, snow does not fall in April through October.

Daylight

In Harris, the average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:27 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm CDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September in Harris is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature during September is 81.5°F (27.5°C) and the low-temperature is 62.4°F (16.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 86°F (30°C).

What is the average humidity in September?

In Harris, the average relative humidity in September is 73%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.2 days and accumulates 1.61" (41mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 12.2 days. Throughout September, 1.61" (41mm) of precipitation is accumulated.

When it does not snow?

In Harris, snow does not fall in April through October.

How many hours of daylight does Harris have in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:27 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm CDT.

How many hours of sunshine does Harris have in September?

In September, the average sunshine duration is 9.3h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Harris, TN

Average temperature in September - Harris, TN
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.2°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in September
Harris, TN

Average pressure in September - Harris, TN
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Harris, TN

Average wind speed in September - Harris, TN
  • Average wind speed in September: 6.3mph

The windiest months (with the highest average wind speed) are January, February, March and April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in September
Harris, TN

Average humidity in September - Harris, TN
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Harris, TN

Average rainfall in September - Harris, TN
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in September
Harris, TN

Average rainfall days in September - Harris, TN
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (10.1 days).

Average snowfall in September
Harris, TN

Average snowfall in September - Harris, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Harris, TN

Average snowfall days in September - Harris, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.9 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
Harris, TN

Average daylight in September / Average sunshine in September - Harris, 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: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in September
Harris, TN

Average sunshine days in September - Harris, TN
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in September
Harris, TN

Average UV index in September - Harris, 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
Harris, TN

Average cloud cover in September - Harris, TN
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in September
Harris, TN

Average visibility in September - Harris, 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).

Harris, Tennessee, USA

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