September weather forecast
Waynesboro, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Waynesboro, Tennessee, with an average temperature ranging between max 82.6°F (28.1°C) and min 63°F (17.2°C).

Temperature

September ushers in a minor alteration in Waynesboro's climate, with the average high-temperature moving from August's hot 88.3°F (31.3°C) to a moderately hot 82.6°F (28.1°C). In the month of September, the temperature generally rests at an average low of 63°F (17.2°C).

Heat index

In September, the average heat index is estimated at a tropical 89.6°F (32°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

The average relative humidity in September is 75%.

Rainfall

September and November are months with the least rain when the rain falls for 14.3 days and typically aggregates up to 2.52" (64mm) of rain.

Snowfall

In Waynesboro, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:35 pm CDT.

Sunshine

In Waynesboro, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Exercise care. People with light skin might get 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

During September, Waynesboro experiences an average high-temperature of 82.6°F (28.1°C) and a low-temperature of 63°F (17.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 89.6°F (32°C).

What is the average humidity in September?

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

What is the driest month?

The months with the least rainfall are September and November Rain falls for 14.3 days and accumulates 2.52" (64mm) of rain.

How many days does it rain in September?

In Waynesboro, during September, the rain falls for 14.3 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

In Waynesboro, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Waynesboro have in September?

In September, the average day length is 12h and 23min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of the month, in Waynesboro, sunrise is at 6:45 am and sunset at 6:35 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.9h.

What is the UV index reading in September?

The average daily maximum UV index in September in Waynesboro is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Waynesboro, TN

Average temperature in September - Waynesboro, TN
  • Average high temperature in September: 82.6°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (45.7°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (32°F).

Average pressure in September
Waynesboro, TN

Average pressure in September - Waynesboro, 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 (29.97"Hg).

Average wind speed in September
Waynesboro, TN

Average wind speed in September - Waynesboro, TN
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in September
Waynesboro, TN

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

The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
Waynesboro, TN

Average rainfall in September - Waynesboro, TN
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is February (4.84").
The driest months (with the least rainfall) are September and November (2.52").

Average rainfall days in September
Waynesboro, TN

Average rainfall days in September - Waynesboro, TN
  • Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (10.4 days).

Average snowfall in September
Waynesboro, TN

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

The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Waynesboro, TN

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

The month with the highest number of snowfall days is February (3.4 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
Waynesboro, TN

Average daylight in September / Average sunshine in September - Waynesboro, 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: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Waynesboro, TN

Average sunshine days in September - Waynesboro, TN
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in September
Waynesboro, TN

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

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Waynesboro, TN

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September
Waynesboro, TN

Average visibility in September - Waynesboro, 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).

Waynesboro, Tennessee, USA

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