September weather forecast
Red Sulphur Springs, TN

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Weather in September

The first month of the autumn, September, is still a warm month in Red Sulphur Springs, Tennessee, with an average temperature ranging between min 63.7°F (17.6°C) and max 83.8°F (28.8°C).

Temperature

September is characterized by a slight reduction in average high-temperature, easing from a tropical 89.2°F (31.8°C) in August to a moderately hot 83.8°F (28.8°C). Nighttime temperature in Red Sulphur Springs dips to a mean of 63.7°F (17.6°C) during September.

Heat index

September's mean heat index is estimated at a tropical 91.4°F (33°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

In September, the average relative humidity is 74%.

Rainfall

The month with the least rainfall in Red Sulphur Springs is September, when the rain falls for 13 days and typically collects 1.77" (45mm) of precipitation.

Snowfall

In Red Sulphur Springs, snow does not fall in April through October.

Daylight

In September, the average length of the day in Red Sulphur Springs is 12h and 23min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:19 pm. On the last day of September, in Red Sulphur Springs, sunrise is at 6:47 am and sunset at 6:37 pm CDT.

Sunshine

In Red Sulphur Springs, the average sunshine in September is 9.1h.

UV index

In Red Sulphur Springs, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Red Sulphur Springs during September?

An average high-temperature, in September, in Red Sulphur Springs, is 83.8°F (28.8°C) and the average low-temperature is 63.7°F (17.6°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 91.4°F (33°C).

What is the average humidity in September in Red Sulphur Springs?

In September, the average relative humidity in Red Sulphur Springs is 74%.

What is the driest month in Red Sulphur Springs?

The month with the least rainfall in Red Sulphur Springs, Tennessee, is September, when the rain falls for 13 days and typically collects 1.77" (45mm) of precipitation.

How much does it rain in Red Sulphur Springs in September?

In Red Sulphur Springs, during September, the rain falls for 13 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Red Sulphur Springs?

In Red Sulphur Springs, Tennessee, snow does not fall in April through October.

How many hours of daylight does Red Sulphur Springs have in September?

In Red Sulphur Springs, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Red Sulphur Springs?

On the first day of September in Red Sulphur Springs, sunrise is at 6:26 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:37 pm CDT.

How many hours of sunshine does Red Sulphur Springs have in September?

In Red Sulphur Springs, the average sunshine duration in September is 9.1h.

How high is the UV index in September in Red Sulphur Springs?

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

Average temperature in September - Red Sulphur Springs, TN
  • Average high temperature in September: 83.8°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (47.3°F).

  • Average low temperature in September: 63.7°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).

Average pressure in September
Red Sulphur Springs, TN

Average pressure in September - Red Sulphur Springs, TN
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in September
Red Sulphur Springs, TN

Average wind speed in September - Red Sulphur Springs, TN
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in September
Red Sulphur Springs, TN

Average humidity in September - Red Sulphur Springs, TN
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Red Sulphur Springs, TN

Average rainfall in September - Red Sulphur Springs, TN
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in September
Red Sulphur Springs, TN

Average rainfall days in September - Red Sulphur Springs, TN
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9 days).

Average snowfall in September
Red Sulphur Springs, TN

Average snowfall in September - Red Sulphur Springs, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Red Sulphur Springs, TN

Average snowfall days in September - Red Sulphur Springs, TN
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Red Sulphur Springs, TN

Average daylight in September / Average sunshine in September - Red Sulphur Springs, 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: 9h and 1min

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

Average sunshine days in September
Red Sulphur Springs, TN

Average sunshine days in September - Red Sulphur Springs, TN
  • Average sunshine days in September: 15.6 days

The months with the most sunshine days are October and November (19.3 days).
The month with the least sunshine days is July (11 days).

Average UV index in September
Red Sulphur Springs, TN

Average UV index in September - Red Sulphur Springs, TN
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Red Sulphur Springs, TN

Average cloud cover in September - Red Sulphur Springs, TN
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Red Sulphur Springs, TN

Average visibility in September - Red Sulphur Springs, TN
  • Average visibility in September: 6mi

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

Red Sulphur Springs, Tennessee, USA

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