Houston Weather in July

July offers the year's sunniest weather for Houston, Texas. Although most days do get hot now, extreme heat is uncommon.

This page gives detailed information on the typical July weather for Houston.

You can jump directly to data and descriptions for:

The numbers here are historical averages based on climate data gathered at the George Bush Intercontinental Airport, located north of downtown Houston.

Temperature Weather iconTemperature

94 °F July average high 34 °C
75 °F July average low 24 °C

In most years, Houston averages a daily maximum temperature for July that's between 92 and 96 degrees Fahrenheit (33 to 35 degrees Celsius). The minimum temperature usually falls between 74 and 76 °F (23 to 25 °C).

The days at Houston warm slightly during July. By the end of the month, the temperature has climbed around 2 °F (1 °C) above what it was at the start.

26 days 90 °F max. or more (32 °C)
1 day 70 °F min. or less (21 °C)

Usually every day in July is at least 80 °F (27 °C) in Houston. The city averages 1 day this month when the thermometer reaches into the 100s °F (over 38 °C).

Normally July never cools down to 60 °F (16 °C).

Rainy Weather iconRain

3.8 in total precipitation 96 mm
9 days of rain

Half the time, Houston receives 2 to 5 inches (41 to 130 mm) of rainfall in July. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

70 % sunshine
7 days clear skies

July is the year's sunniest month for Houston. The sun's rays reach the ground during 70 percent of daylight hours on average, for a total of 300 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in July at Houston lasts for 13 hours and 49 minutes a day on average. The longest day of the month is the 1st with 14 hours and 1 minute of daylight. By the end of the month, the days have shortened to 13:34 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

74 % July average humidity

The relative humidity in Houston during July usually peaks at 93 percent in the morning then drops to 55 percent by mid afternoon.

Local Time12 am3 am6 am9 am12 pm3 pm6 pm9 pm
Humidity % 87 91 93 73 58 55 62 78

Windy Weather iconWind

6.6 mph July wind speed average 10.6 kph

July is less windy than most other months in Houston.

Stormy Weather iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
11 days with thunderstorms in July
8 % chance a named storm approaches

July is usually the peak of thunderstorm activity over Houston.

There's an 8 percent probability that a named tropical storm will approach within 100 miles (165 km) of Houston during July, and a 2 percent chance of a category 1 or 2 hurricane. Major hurricanes are unlikely this time of year.


These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.

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