September weather forecast
Arline, TN

Share

Weather in September

September, the first month of the autumn in Arline, is still a warm month, with an average temperature ranging between min 60.1°F (15.6°C) and max 81.3°F (27.4°C).

Temperature

Arline observes a small decrease in the average high-temperature with the arrival of September, falling from August's hot 87.1°F (30.6°C) to a warm 81.3°F (27.4°C). During the month of September, Arline experiences a steady low-temperature average of 60.1°F (15.6°C).

Heat index

The average heat index in September is appraised at a hot 86°F (30°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Heat index determinations are made taking into account the shade and light air movements. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

In Arline, the average relative humidity in September is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.6 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

In Arline, snow does not fall in May through September.

Daylight

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 8:03 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:21 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 health hazard from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 5 in September leads to these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

In Arline, in September, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised 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 12.6 days and accumulates 1.97" (50mm) of precipitation.

How many days does it rain in September?

In Arline, during September, the rain falls for 12.6 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

In Arline, Tennessee, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In Arline, the average day length in September 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 8:03 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:21 pm EDT.

How many hours of sunshine does Arline have in September?

In September, the average sunshine duration is 8.7h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Arline, TN

Average temperature in September - Arline, TN
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in September: 60.1°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in September
Arline, TN

Average pressure in September - Arline, 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
Arline, TN

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

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in September
Arline, TN

Average humidity in September - Arline, 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
Arline, TN

Average rainfall in September - Arline, TN
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Arline, TN

Average rainfall days in September - Arline, TN
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (10.3 days).

Average snowfall in September
Arline, TN

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

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Arline, TN

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

The month with the highest number of snowfall days is January (5.5 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
Arline, TN

Average daylight in September / Average sunshine in September - Arline, 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 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in September
Arline, TN

Average sunshine days in September - Arline, TN
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (10.3 days).

Average UV index in September
Arline, TN

Average UV index in September - Arline, 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
Arline, TN

Average cloud cover in September - Arline, TN
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in September
Arline, TN

Average visibility in September - Arline, 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).

Arline, Tennessee, USA

Weather forecast for your location

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