September weather forecast
Brittsville, TN

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Weather in September

September, the first month of the autumn in Brittsville, is still a warm month, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 59.7°F (15.4°C).

Temperature

September's onset brings a negligible change in high-temperatures, falling from a hot 86.4°F (30.2°C) in August to a warm 81°F (27.2°C). Brittsville's nights in September experience an average temperature drop to a mild 59.7°F (15.4°C).

Heat index

The heat index value during September is calculated to be a hot 86°F (30°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. 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 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The months with the lowest humidity in Brittsville are January, June through November, with an average relative humidity of 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.7 days and typically collects 1.77" (45mm) of precipitation.

Snowfall

In Brittsville, snow does not fall in May through October.

Daylight

In Brittsville, the average length of the day in September is 12h and 23min.
On the first day of September in Brittsville, 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 September, the average sunshine in Brittsville is 8.3h.

UV index

In Brittsville, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 5 in September translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Brittsville?

In Brittsville, in September, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 59.7°F (15.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What are the least humid months in Brittsville?

The months with the lowest humidity in Brittsville are January, June through November, with an average relative humidity of 76%.

What is the average humidity in September in Brittsville?

In September, the average relative humidity in Brittsville is 76%.

What is the driest month in Brittsville?

The month with the least rainfall in Brittsville is September, when the rain falls for 11.7 days and typically collects 1.77" (45mm) of precipitation.

How many days does it rain in September in Brittsville?

In September, in Brittsville, the rain falls for 11.7 days. Throughout September, 1.77" (45mm) of precipitation is accumulated.

When it does not snow in Brittsville?

In Brittsville, Tennessee, snow does not fall in May through October.

What is the average length of the day in September in Brittsville?

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

When is the sunrise / sunset in September in Brittsville?

On the first day of September in Brittsville, Tennessee, 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.

How long on average sun shines in September in Brittsville?

In September, the average sunshine duration in Brittsville, Tennessee, is 8.3h.

What is the UV index intensity in September in Brittsville?

In Brittsville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Brittsville, TN

Average temperature in September - Brittsville, TN
  • Average high temperature in September: 81°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in September: 59.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

Average pressure in September
Brittsville, TN

Average pressure in September - Brittsville, 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
Brittsville, TN

Average wind speed in September - Brittsville, TN
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).

Average humidity in September
Brittsville, TN

Average humidity in September - Brittsville, TN
  • Average humidity in September: 76%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).

Average rainfall in September
Brittsville, TN

Average rainfall in September - Brittsville, TN
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in September
Brittsville, TN

Average rainfall days in September - Brittsville, TN
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in September
Brittsville, TN

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

The month with the highest snowfall is January (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Brittsville, TN

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

The month with the highest number of snowfall days is January (3.4 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
Brittsville, TN

Average daylight in September / Average sunshine in September - Brittsville, 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 2min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in September
Brittsville, TN

Average sunshine days in September - Brittsville, TN
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (11.5 days).

Average UV index in September
Brittsville, TN

Average UV index in September - Brittsville, 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
Brittsville, TN

Average cloud cover in September - Brittsville, TN
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 32).

Average visibility in September
Brittsville, TN

Average visibility in September - Brittsville, TN
  • Average visibility in September: 5mi

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

Brittsville, Tennessee, USA

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