September weather forecast
Matheny Grove, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Matheny Grove, Tennessee, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 81.9°F (27.7°C).

Temperature

In September, Matheny Grove experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 86.9°F (30.5°C) in August to a moderately hot 81.9°F (27.7°C). Matheny Grove temperatures generally rest at a low of 62.4°F (16.9°C) during the September nights.

Heat index

The heat index value during September is computed to be a tropical 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In Matheny Grove, Tennessee, the average relative humidity in September is 73%.

Rainfall

September is the month with the least rainfall in Matheny Grove. Rain falls for 13.5 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Matheny Grove, the average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:26 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:39 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 5 in September translates into these instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. The solar radiation around mid-day is intense; avoid the Sun and stay safe. 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

What is the average September temperature in Matheny Grove?

September temperatures in Matheny Grove, Tennessee, vary between a high-temperature of 81.9°F (27.7°C) and a low-temperature of 62.4°F (16.9°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 computed to be 86°F (30°C).

What is the average humidity in September in Matheny Grove?

In September, the average relative humidity in Matheny Grove, Tennessee, is 73%.

What is the driest month in Matheny Grove?

September is the month with the least rainfall in Matheny Grove, Tennessee. Rain falls for 13.5 days and accumulates 1.97" (50mm) of precipitation.

How much does it rain in Matheny Grove in September?

In September, in Matheny Grove, the rain falls for 13.5 days. Throughout September, 1.97" (50mm) of precipitation is accumulated.

When it does not snow in Matheny Grove?

In Matheny Grove, snow does not fall in April through October.

What is the average length of the day in September in Matheny Grove?

In Matheny Grove, Tennessee, the average day length in September is 12h and 24min.

What time are sunrise and sunset in September in Matheny Grove?

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:39 pm CDT.

How many hours of sunshine does Matheny Grove have in September?

The average sunshine duration in September in Matheny Grove, Tennessee, is 9.4h.

How high is the UV index in September in Matheny Grove?

In Matheny Grove, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes 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
Matheny Grove, TN

Average temperature in September - Matheny Grove, TN
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.7°F).

  • Average low temperature in September: 62.4°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 (30.4°F).

Average pressure in September
Matheny Grove, TN

Average pressure in September - Matheny Grove, 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
Matheny Grove, TN

Average wind speed in September - Matheny Grove, TN
  • Average wind speed in September: 6.1mph

The windiest months (with the highest average wind speed) are January, February and April (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

Average humidity in September
Matheny Grove, TN

Average humidity in September - Matheny Grove, TN
  • Average humidity in September: 73%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Matheny Grove, TN

Average rainfall in September - Matheny Grove, TN
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is February (4.49").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Matheny Grove, TN

Average rainfall days in September - Matheny Grove, TN
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is November (10.5 days).

Average snowfall in September
Matheny Grove, TN

Average snowfall in September - Matheny Grove, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Matheny Grove, TN

Average snowfall days in September - Matheny Grove, 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, September and October (0 days).

Average daylight in September /
Average sunshine in September
Matheny Grove, TN

Average daylight in September / Average sunshine in September - Matheny Grove, 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 2min

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
Matheny Grove, TN

Average sunshine days in September - Matheny Grove, TN
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in September
Matheny Grove, TN

Average UV index in September - Matheny Grove, 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
Matheny Grove, TN

Average cloud cover in September - Matheny Grove, TN
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Matheny Grove, TN

Average visibility in September - Matheny Grove, 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).

Matheny Grove, Tennessee, USA

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