September weather forecast
Terrell, TN

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Weather in September

September, the first month of the autumn in Terrell, is also a moderately hot month, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 62.4°F (16.9°C).

Temperature

Terrell ushers in September with an average high-temperature of a moderately hot 81.7°F (27.6°C), showing a close resemblance to the previous month. Terrell records a steady low-temperature average of 62.4°F (16.9°C) during September.

Heat index

In September, the heat index is appraised at a hot 86°F (30°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

In September, the average relative humidity is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.38" (35mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Terrell, the average length of the day in September is 12h and 24min.
On the first day of September in Terrell, sunrise is at 6:27 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm CDT.

Sunshine

In Terrell, the average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jun 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Terrell in September?

In September, in Terrell, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 62.4°F (16.9°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is appraised at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 73%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.38" (35mm) of precipitation.

How much does it rain in September?

In Terrell, during September, the rain falls for 11.4 days and regularly aggregates up to 1.38" (35mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Terrell have in September?

In Terrell, the average day length in September is 12h and 24min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:27 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm CDT.

How long on average sun shines in September in Terrell?

In September, the average sunshine duration is 9.5h.

What is the UV index intensity in September?

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

Average temperature in September - Terrell, TN
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.3°F).

  • Average low temperature in September: 62.4°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

Average pressure in September
Terrell, TN

Average pressure in September - Terrell, TN
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Terrell, TN

Average wind speed in September - Terrell, TN
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are January, February and April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in September
Terrell, TN

Average humidity in September - Terrell, TN
  • Average humidity in September: 73%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Terrell, TN

Average rainfall in September - Terrell, TN
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is February (4.09").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in September
Terrell, TN

Average rainfall days in September - Terrell, TN
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Terrell, TN

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

The month with the highest snowfall is March (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Terrell, TN

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

The months with the highest number of snowfall days are January and February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Terrell, TN

Average daylight in September / Average sunshine in September - Terrell, 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 42min).

  • Average sunshine in September: 9h and 3min

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 42min).

Average sunshine days in September
Terrell, TN

Average sunshine days in September - Terrell, TN
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in September
Terrell, TN

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

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are February and December (UV index 2).

Average cloud cover in September
Terrell, TN

Average cloud cover in September - Terrell, TN
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Terrell, TN

Average visibility in September - Terrell, 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).

Terrell, Tennessee, USA

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