July weather forecast
Lewisville, TX

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Weather in July

July is the peak of summer in Lewisville, indicating the highest temperatures of the year with an average high of 95.2°F (35.1°C). The number of sunshine days reaches its zenith during this month, resulting in clear, sunny days. Despite the high temperatures, the average rainfall remains relatively low, bringing limited reprieve from the heat. As the calendar marches towards August, a slight decrease in temperature can be sensed as summer begins to fade.

Temperature

A minor adjustment in Lewisville's average high-temperature is noted with the start of July, touching a fiery hot 95.2°F (35.1°C) from June's 91.2°F (32.9°C). In Lewisville, the average low-temperature during the month of July is a moderately hot 76.6°F (24.8°C).

Heat index

The heat index in July is computed to be a burning hot 113°F (45°C). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.
The metrics for the heat index are tailored for both shady environments and light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Lewisville, the average relative humidity in July is 59%.

Rainfall

In Lewisville, in July, during 11.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Lewisville, during the entire year, the rain falls for 132.1 days and collects up to 29.09" (739mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Lewisville, the average length of the day in July is 14h and 5min.
On the first day of July, sunrise is at 6:23 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 8:27 pm CDT.

Sunshine

The months with the most sunshine are July and August, with an average of 11h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in July leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

How hot is it in July?

The high-temperature, in July, in Lewisville, is 95.2°F (35.1°C), while the low-temperature averages to 76.6°F (24.8°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 113°F (45°C).

What is the average humidity in July?

The average relative humidity in July is 59%.

How much does it rain in Lewisville in July?

In July, the rain falls for 11.5 days. Throughout July, 2.01" (51mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in July?

The average day length in July is 14h and 5min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 6:23 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 8:27 pm CDT.

What are the months with the most sunshine?

The months with the most sunshine are July and August, with an average of 11h of sunshine.

How long on average sun shines in July?

In Lewisville, the average sunshine duration in July is 11h.

What is the month with the highest UV index?

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

What is the UV index reading in July?

In Lewisville, the average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high 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 July
Lewisville, TX

Average temperature in July - Lewisville, TX
  • Average high temperature in July: 95.2°F

The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in July: 76.6°F

The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).

Average pressure in July
Lewisville, TX

Average pressure in July - Lewisville, TX
  • Average pressure in July: 29.94"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Lewisville, TX

Average wind speed in July - Lewisville, TX
  • Average wind speed in July: 7.3mph

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

Average humidity in July
Lewisville, TX

Average humidity in July - Lewisville, TX
  • Average humidity in July: 59%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (53%).

Average rainfall in July
Lewisville, TX

Average rainfall in July - Lewisville, TX
  • Average rainfall in July: 2.01"

The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are January and February (1.57").

Average rainfall days in July
Lewisville, TX

Average rainfall days in July - Lewisville, TX
  • Average rainfall days in July: 11.5 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in July
Lewisville, TX

Average snowfall in July - Lewisville, TX
  • Average snowfall in July: 0"

The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Lewisville, TX

Average snowfall days in July - Lewisville, TX
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (1.1 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
Lewisville, TX

Average daylight in July / Average sunshine in July - Lewisville, TX
  • 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: 11h and 0min

The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in July
Lewisville, TX

Average sunshine days in July - Lewisville, TX
  • Average sunshine days in July: 17.7 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is September (14.9 days).

Average UV index in July
Lewisville, TX

Average UV index in July - Lewisville, TX
  • Average UV index in July: 7

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

Average cloud cover in July
Lewisville, TX

Average cloud cover in July - Lewisville, TX
  • Average cloud cover in July: 23

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in July
Lewisville, TX

Average visibility in July - Lewisville, TX
  • 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).

Lewisville, Texas, USA

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