September weather forecast
Walterhill, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Walterhill, Tennessee, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.5°F (27.5°C).

Temperature

September is marked by a subtle drop in average high-temperatures, transitioning from a hot 86.9°F (30.5°C) in August to a moderately hot 81.5°F (27.5°C). Walterhill witnesses a consistent average low-temperature of 61.9°F (16.6°C) throughout September.

Heat index

Throughout September, the heat index is calculated to be a tropical 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

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

April through October are months without snowfall.

Daylight

In Walterhill, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:30 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Walterhill, 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 average individuals.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The average high-temperature, in September, in Walterhill, is 81.5°F (27.5°C), while the average low-temperature is 61.9°F (16.6°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in September?

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

What is the driest month?

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

How much does it rain in September?

In September, the rain falls for 8 days. Throughout September, 0.39" (10mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Walterhill have in September?

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

When are sunrise and sunset in September?

On the first day of September in Walterhill, sunrise is at 6:17 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:30 pm CDT.

How many hours of sunshine does Walterhill have in September?

In Walterhill, the average sunshine duration in September is 8.6h.

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 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
Walterhill, TN

Average temperature in September - Walterhill, 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
Walterhill, TN

Average pressure in September - Walterhill, 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
Walterhill, TN

Average wind speed in September - Walterhill, 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
Walterhill, TN

Average humidity in September - Walterhill, 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
Walterhill, TN

Average rainfall in September - Walterhill, 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
Walterhill, TN

Average rainfall days in September - Walterhill, 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
Walterhill, TN

Average snowfall in September - Walterhill, 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
Walterhill, TN

Average snowfall days in September - Walterhill, 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
Walterhill, TN

Average daylight in September / Average sunshine in September - Walterhill, 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
Walterhill, TN

Average sunshine days in September - Walterhill, 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
Walterhill, TN

Average UV index in September - Walterhill, 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
Walterhill, TN

Average cloud cover in September - Walterhill, 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
Walterhill, TN

Average visibility in September - Walterhill, 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).

Walterhill, Tennessee, USA

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