July weather forecast
Duncan, TN

Share

Weather in July

July is a hot summer month in Duncan, Tennessee, with an average temperature varying between 65.5°F (18.6°C) and 87.6°F (30.9°C).

Temperature

July is the month when Duncan sees the highest average temperatures, with a high of 87.6°F (30.9°C) and a low of 65.5°F (18.6°C).

Heat index

July's average heat index is estimated at a torrid 100.4°F (38°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. 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 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Duncan, the average relative humidity in July is 73%.

Rainfall

July is the month with the most rainfall. Rain falls for 16.3 days and accumulates 2.2" (56mm) of precipitation.

Snowfall

In Duncan, snow does not fall in April through September.

Daylight

The average length of the day in July in Duncan is 14h and 18min.
On the first day of the month, sunrise is at 6:23 am and sunset at 8:56 pm. On the last day of July, sunrise is at 6:43 am and sunset at 8:40 pm EDT.

Sunshine

In Duncan, Tennessee, the average sunshine in July is 10.5h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
[Resources]

Frequently asked questions

What is the warmest month in Duncan?

July tends to be the warmest month, with temperatures averaging a daily high of 87.6°F (30.9°C) and a low of 65.5°F (18.6°C).

Is it hot in Duncan during July?

The high-temperature, in July, in Duncan, is 87.6°F (30.9°C), while the low-temperature averages to 65.5°F (18.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is estimated at 100.4°F (38°C).

What is the average humidity in July in Duncan?

The average relative humidity in July in Duncan is 73%.

What is the wettest month in Duncan?

The month with the most rainfall is July, when the rain falls for 16.3 days and typically aggregates up to 2.2" (56mm) of precipitation.

How much does it rain in Duncan in July?

In Duncan, Tennessee, in July, during 16.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow in Duncan?

In Duncan, snow does not fall in April through September.

What is the average length of the day in July in Duncan?

In Duncan, the average day length in July is 14h and 18min.

When are sunrise and sunset in July in Duncan?

On the first day of July in Duncan, sunrise is at 6:23 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 8:40 pm EDT.

How long on average sun shines in July in Duncan?

In Duncan, Tennessee, the average sunshine duration in July is 10.5h.

What is the month with the highest UV index in Duncan?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

How high is the UV index in July in Duncan?

The average daily maximum UV index in July in Duncan is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
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 July
Duncan, TN

Average temperature in July - Duncan, TN
  • Average high temperature in July: 87.6°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in July: 65.5°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

[Resources]

Average pressure in July
Duncan, TN

Average pressure in July - Duncan, TN
  • Average pressure in July: 30.01"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).

[Resources]

Average wind speed in July
Duncan, TN

Average wind speed in July - Duncan, TN
  • Average wind speed in July: 3.9mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

[Resources]

Average humidity in July
Duncan, TN

Average humidity in July - Duncan, TN
  • Average humidity in July: 73%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).

[Resources]

Average rainfall in July
Duncan, TN

Average rainfall in July - Duncan, TN
  • Average rainfall in July: 2.2"

The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is September (0.94").

[Resources]

Average rainfall days in July
Duncan, TN

Average rainfall days in July - Duncan, TN
  • Average rainfall days in July: 16.3 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).

[Resources]

Average snowfall in July
Duncan, TN

Average snowfall in July - Duncan, TN
  • Average snowfall in July: 0"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").

[Resources]

Average snowfall days in July
Duncan, TN

Average snowfall days in July - Duncan, TN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight in July /
Average sunshine in July
Duncan, TN

Average daylight in July / Average sunshine in July - Duncan, TN
  • Average daylight in July: 14h 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 July: 10h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in July
Duncan, TN

Average sunshine days in July - Duncan, TN
  • Average sunshine days in July: 12.5 days

The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are February and July (12.5 days).

[Resources]

Average UV index in July
Duncan, TN

Average UV index in July - Duncan, TN
  • Average UV index in July: 6

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).

[Resources]

Average cloud cover in July
Duncan, TN

Average cloud cover in July - Duncan, TN
  • Average cloud cover in July: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).

[Resources]

Average visibility in July
Duncan, TN

Average visibility in July - Duncan, TN
  • Average visibility in July: 6mi

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

[Resources]

Duncan, Tennessee, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location