July weather forecast
Knoxville, AL

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Weather in July

July, the same as June, in Knoxville, Alabama, is another hot summer month, with temperature in the range of an average high of 91.9°F (33.3°C) and an average low of 71.6°F (22°C).

Temperature

Knoxville registers the highest average temperatures during the month of July, with peaks of 91.9°F (33.3°C) and lows of 71.6°F (22°C).

Heat index

July's average heat index is evaluated at a blazing hot 114.8°F (46°C). Vigilance: Heat cramps and heat exhaustion are likely. The likelihood of heatstroke increases with continued activity.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 extremely significant for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in July in Knoxville is 74%.

Rainfall

In July, the rain falls for 20.6 days. Throughout July, 3.5" (89mm) of precipitation is accumulated. In Knoxville, during the entire year, the rain falls for 166.5 days and collects up to 39.41" (1001mm) of precipitation.

Snowfall

In Knoxville, snow does not fall in March through November.

Daylight

The average length of the day in July is 14h and 5min.
On the first day of July, sunrise is at 5:46 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:50 pm CDT.

Sunshine

The average sunshine in July in Knoxville is 10.3h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In July, an average UV index of 7 transforms into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

What are the warmest months?

The average temperatures reach their apex in July, averaging 91.9°F (33.3°C) at the high end and 71.6°F (22°C) at the low end.

How hot is it in July?

In July, the average high-temperature and low-temperature in Knoxville are 91.9°F (33.3°C) and 71.6°F (22°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 114.8°F (46°C).

What is the average humidity in July?

In Knoxville, the average relative humidity in July is 74%.

How many days does it rain in July?

In July, the rain falls for 20.6 days. Throughout July, 3.5" (89mm) of precipitation is accumulated.

When it does not snow?

March through November are months without snowfall.

What is the average length of the day in July?

In Knoxville, the average day length in July is 14h and 5min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:46 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:50 pm CDT.

How long on average sun shines in July?

In Knoxville, the average sunshine duration in July is 10.3h.

When is the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 7.

What is the UV index reading in July?

In Knoxville, the average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Knoxville, AL

Average temperature in July - Knoxville, AL
  • Average high temperature in July: 91.9°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (52.9°F).

  • Average low temperature in July: 71.6°F

The months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

Average pressure in July
Knoxville, AL

Average pressure in July - Knoxville, AL
  • Average pressure in July: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in July
Knoxville, AL

Average wind speed in July - Knoxville, AL
  • Average wind speed in July: 4.6mph

The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in July
Knoxville, AL

Average humidity in July - Knoxville, AL
  • Average humidity in July: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).

Average rainfall in July
Knoxville, AL

Average rainfall in July - Knoxville, AL
  • Average rainfall in July: 3.5"

The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is October (2.28").

Average rainfall days in July
Knoxville, AL

Average rainfall days in July - Knoxville, AL
  • Average rainfall days in July: 20.6 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in July
Knoxville, AL

Average snowfall in July - Knoxville, AL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in July
Knoxville, AL

Average snowfall days in July - Knoxville, AL
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Knoxville, AL

Average daylight in July / Average sunshine in July - Knoxville, AL
  • Average daylight in July: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in July
Knoxville, AL

Average sunshine days in July - Knoxville, AL
  • Average sunshine days in July: 8.8 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in July
Knoxville, AL

Average UV index in July - Knoxville, AL
  • Average UV index in July: 7

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in July
Knoxville, AL

Average cloud cover in July - Knoxville, AL
  • Average cloud cover in July: 34

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in July
Knoxville, AL

Average visibility in July - Knoxville, AL
  • Average visibility in July: 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).

Knoxville, Alabama, USA

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