July weather forecast
Houston, TX

A beautiful park in Root square overlooking the central business district of Houston, Texas, USA
A beautiful park in Root square overlooking the central business district of Houston, Texas, USA

Weather in July

July, like June, is another hot summer month in Houston, Texas, with an average temperature varying between 93.4°F (34.1°C) and 77.2°F (25.1°C).

Temperature

In Houston, the average high-temperature in July is almost the same as in June - a still tropical 93.4°F (34.1°C). The average low-temperature, in July, is 77.2°F (25.1°C).

Heat index

In July, the average heat index is evaluated at a blazing hot 119.7°F (48.7°C). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

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

Rainfall

In Houston, during July, the rain falls for 17.6 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Houston, during the entire year, the rain falls for 180.5 days and collects up to 35.35" (898mm) of precipitation.

Snowfall

In Houston, snow does not fall in February through November.

Daylight

In July, the average length of the day is 13h and 50min.
On the first day of the month, sunrise is at 6:24 am and sunset at 8:26 pm. On the last day of July, sunrise is at 6:40 am and sunset at 8:15 pm CDT.

Sunshine

The average sunshine in July in Houston is 10.4h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Houston. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in July in Houston?

In Houston, in July, the average high-temperature is 93.4°F (34.1°C), and the average low-temperature is 77.2°F (25.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is evaluated at 119.7°F (48.7°C).

What is the average humidity in July in Houston?

In July, the average relative humidity is 73%.

How many days does it rain in July in Houston?

In July, in Houston, the rain falls for 17.6 days. Throughout July, 3.15" (80mm) of precipitation is accumulated.

When it does not snow in Houston?

In Houston, Texas, snow does not fall in February through November.

How many hours of daylight does Houston have in July?

In July, the average day length in Houston is 13h and 50min.

When is the sunrise / sunset in July in Houston?

On the first day of July in Houston, sunrise is at 6:24 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 8:15 pm CDT.

How long on average sun shines in July in Houston?

The average sunshine duration in July in Houston is 10.4h.

What are the months with the highest UV index in Houston?

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

What is the UV index reading in July in Houston?

In Houston, Texas, the average daily maximum UV index in July is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Houston, TX

Average temperature in July - Houston, TX
  • Average high temperature in July: 93.4°F

The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (61.3°F).

  • Average low temperature in July: 77.2°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in July
Houston, TX

Average pressure in July - Houston, TX
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in July
Houston, TX

Average wind speed in July - Houston, TX
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).

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Average humidity in July
Houston, TX

Average humidity in July - Houston, TX
  • Average humidity in July: 73%

The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are August and October (70%).

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Average rainfall in July
Houston, TX

Average rainfall in July - Houston, TX
  • Average rainfall in July: 3.15"

The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.77").

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Average rainfall days in July
Houston, TX

Average rainfall days in July - Houston, TX
  • Average rainfall days in July: 17.6 days

The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is January (11.8 days).

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Average snowfall in July
Houston, TX

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

The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in July
Houston, TX

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

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in July /
Average sunshine in July
Houston, TX

Average daylight in July / Average sunshine in July - Houston, TX
  • Average daylight in July: 13h and 50min

The month with the longest days is June (Average daylight: 14h and 2min).
The month with the shortest days is December (Average daylight: 10h and 16min).

  • Average sunshine in July: 10h and 24min

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

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Average sunshine days in July
Houston, TX

Average sunshine days in July - Houston, TX
  • Average sunshine days in July: 11.4 days

The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.9 days).

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Average UV index in July
Houston, TX

Average UV index in July - Houston, 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).

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Average cloud cover in July
Houston, TX

Average cloud cover in July - Houston, TX
  • Average cloud cover in July: 29

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in July
Houston, TX

Average visibility in July - Houston, 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).

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