September weather forecast
Grady, TN

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Weather in September

September, the first month of the autumn in Grady, is still a warm month, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 81.3°F (27.4°C).

Temperature

Grady experiences a recorded average high-temperature of a moderately hot 81.3°F (27.4°C) in September, closely aligned with August's 86.5°F (30.3°C). Despite the intense daytime heat, Grady sustains a steady low-temperature average of 59.5°F (15.3°C) during September.

Heat index

September's mean heat index is estimated at a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In Grady, the average relative humidity in September is 76%.

Rainfall

The months with the least rainfall are September and November Rain falls for 12.7 days and accumulates 1.89" (48mm) of rain.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September, sunrise is at 7:11 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:22 pm EDT.

Sunshine

In Grady, the average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index 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: In September, the UV index of 5 transforms into the following advice:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Grady in September?

The average high-temperature, in September, in Grady, is 81.3°F (27.4°C), while the average low-temperature is 59.5°F (15.3°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the average humidity in September?

In Grady, the average relative humidity in September is 76%.

What is the driest month?

The months with the least rainfall are September and November Rain falls for 12.7 days and accumulates 1.89" (48mm) of rain.

How many days does it rain in September?

In Grady, in September, during 12.7 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:11 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:22 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September in Grady is 8.6h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Grady, TN

Average temperature in September - Grady, TN
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (46°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in September
Grady, TN

Average pressure in September - Grady, TN
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in September
Grady, TN

Average wind speed in September - Grady, TN
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in September
Grady, TN

Average humidity in September - Grady, TN
  • Average humidity in September: 76%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are August, October and November (75%).

Average rainfall in September
Grady, TN

Average rainfall in September - Grady, TN
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is July (3.94").
The driest months (with the least rainfall) are September and November (1.89").

Average rainfall days in September
Grady, TN

Average rainfall days in September - Grady, TN
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (9.1 days).

Average snowfall in September
Grady, TN

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

The month with the highest snowfall is February (0.83").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Grady, TN

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

The month with the highest number of snowfall days is January (4.6 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
Grady, TN

Average daylight in September / Average sunshine in September - Grady, 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 4min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Grady, TN

Average sunshine days in September - Grady, TN
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (10.4 days).

Average UV index in September
Grady, TN

Average UV index in September - Grady, 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
Grady, TN

Average cloud cover in September - Grady, TN
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in September
Grady, TN

Average visibility in September - Grady, TN
  • Average visibility in September: 6mi

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

Grady, Tennessee, USA

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