September weather forecast
Cainsville, TN

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Weather in September

September, the first month of the autumn in Cainsville, is still a warm month, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.5°F (27.5°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a tropical 86.9°F (30.5°C) in August to a warm 81.5°F (27.5°C). Cainsville records a mean low-temperature of 61.9°F (16.6°C) in September.

Heat index

For September, the heat index is estimated at a tropical 86°F (30°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In September, the average relative humidity is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 8 days and typically collects 0.39" (10mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:29 pm CDT.

Sunshine

In September, the average sunshine in Cainsville is 8.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

The average high-temperature, in September, in Cainsville, is 81.5°F (27.5°C), while the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is estimated at 86°F (30°C).

What is the average humidity in September?

In Cainsville, the average relative humidity in September is 75%.

What is the driest month?

September is the month with the least rainfall in Cainsville. Rain falls for 8 days and accumulates 0.39" (10mm) of precipitation.

How many days does it rain in September?

In Cainsville, during September, the rain falls for 8 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

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

The average day length in September is 12h and 23min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:29 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.6h.

What is the UV index reading in September?

In Cainsville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Cainsville, TN

Average temperature in September - Cainsville, TN
  • Average high temperature in September: 81.5°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 (45.1°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average pressure in September
Cainsville, TN

Average pressure in September - Cainsville, 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
Cainsville, TN

Average wind speed in September - Cainsville, TN
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is February (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Cainsville, TN

Average humidity in September - Cainsville, TN
  • Average humidity in September: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Cainsville, TN

Average rainfall in September - Cainsville, TN
  • Average rainfall in September: 0.39"

The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is September (0.39").

Average rainfall days in September
Cainsville, TN

Average rainfall days in September - Cainsville, TN
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (7.3 days).

Average snowfall in September
Cainsville, TN

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

The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Cainsville, TN

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

The month with the highest number of snowfall days is January (3.8 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
Cainsville, TN

Average daylight in September / Average sunshine in September - Cainsville, 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 48min).

  • Average sunshine in September: 8h and 4min

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

Average sunshine days in September
Cainsville, TN

Average sunshine days in September - Cainsville, TN
  • Average sunshine days in September: 18.9 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in September
Cainsville, TN

Average UV index in September - Cainsville, 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
Cainsville, TN

Average cloud cover in September - Cainsville, TN
  • Average cloud cover in September: 31

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

Average visibility in September
Cainsville, TN

Average visibility in September - Cainsville, 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).

Cainsville, Tennessee, USA

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