September weather forecast
Cornersville, TN

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Weather in September

The first month of the autumn, September, is still a warm month in Cornersville, Tennessee, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.1°F (27.3°C).

Temperature

September brings a slight decrease in temperature, down from a hot 86.5°F (30.3°C) in August to a moderately hot 81.1°F (27.3°C). An average low-temperature of 61.9°F (16.6°C) is observed during the September nights.

Heat index

The heat index value for September is appraised at a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 particularly important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In September, the average relative humidity is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 14.1 days and typically collects 2.24" (57mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September, sunrise is at 6:20 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:32 pm CDT.

Sunshine

The average sunshine in September in Cornersville is 8.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

In September, in Cornersville, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), 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?

The average relative humidity in September is 76%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 14.1 days and typically collects 2.24" (57mm) of precipitation.

How many days does it rain in September?

In Cornersville, during September, the rain falls for 14.1 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow?

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

How many hours of daylight does Cornersville have in September?

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

When are sunrise and sunset in September in Cornersville?

On the first day of September, sunrise is at 6:20 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:32 pm CDT.

How many hours of sunshine does Cornersville have in September?

In September, the average sunshine duration is 8.5h.

What is the UV index intensity in September?

In Cornersville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Cornersville, TN

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

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.7°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

Average pressure in September
Cornersville, TN

Average pressure in September - Cornersville, 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).

Average wind speed in September
Cornersville, TN

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

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in September
Cornersville, TN

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

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Cornersville, TN

Average rainfall in September - Cornersville, TN
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days in September
Cornersville, TN

Average rainfall days in September - Cornersville, TN
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in September
Cornersville, TN

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

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

Average snowfall days in September
Cornersville, TN

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

The month with the highest number of snowfall days is February (2.6 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
Cornersville, TN

Average daylight in September / Average sunshine in September - Cornersville, 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 3min

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
Cornersville, TN

Average sunshine days in September - Cornersville, TN
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in September
Cornersville, TN

Average UV index in September - Cornersville, TN
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Cornersville, TN

Average cloud cover in September - Cornersville, TN
  • Average cloud cover in September: 32

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September
Cornersville, TN

Average visibility in September - Cornersville, TN
  • Average visibility in September: 6mi

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

Cornersville, Tennessee, USA

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