July weather forecast and climate
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
July, like June, is another tropical summer month in Houston, Texas, with average temperature ranging between min 77.2°F (25.1°C) and max 93.4°F (34.1°C).

Temperature

In July, the average high-temperature is relatively 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 appraised at a burning hot 119.7°F (48.7°C). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like pregnancy, differences in body mass, height, and shape, clothing, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July 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

February through November are months without snowfall.

Daylight

In Houston, the average length of the day in July is 13.8h.

Sunshine

In July, the average sunshine 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 the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in July in Houston?

The average high-temperature, in July, is 93.4°F (34.1°C), while the average low-temperature is 77.2°F (25.1°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is calculated to 119.7°F (48.7°C).

What is the average humidity in July in Houston?

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

How much does it rain in Houston in July?

In Houston, in July, during 17.6 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

When it does not snow in Houston?

February through November are months without snowfall in Houston.

How many hours of daylight does Houston have in July?

In July, the average length of the day in Houston, Texas, is 13.8h.

How long on average sun shines in July in Houston?

In July, the average sunshine is 10.4h.

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

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

What is the UV index intensity in July in Houston?

In Houston, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
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).

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

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

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).

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

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

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").

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).

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

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

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

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

Average daylight in July / Average sunshine in July - Houston, TX
  • Average daylight in July: 13.8h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in July: 10.4h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 4.8h).

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).

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

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 - 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).

Average visibility in July - Houston, TX
  • Average visibility in July: 6mi

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