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 temperature, precipitation, sun, humidity, wind and storms for Houston. The numbers here are historical averages based on temperature and rainfall measurements gathered at Houston Hobby Airport and other climate data from George Bush Intercontinental Airport.

Temperature Weather iconTemperature

93 °F July average high 34 °C
77 °F July average low 25 °C
26 days 90 °F max. or more (32 °C)
0 days 70 °F min. or less (21 °C)

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

Rainy Weather iconRain

4.6 in total precipitation 117 mm
9 days of rain

Half the time, Houston receives 2.3 to 6.9 inches (33 to 101 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

3 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.


The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.

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