The month of July had an even mix of record-breaking hot temperatures, severe storms, and flash flood events. Precipitation was as much as two to four inches above normal in parts of West, North, and East Texas and as much as two to four inches below normal in parts of Central and South Texas. July brought normal to above normal temperature for all of Texas, including areas between two and four degrees above normal in Central and South Texas and as much as four to six degrees above normal in parts of the northern Panhandle.

During the month, July had multiple National Weather Service warned heat advisories, especially in Central and South Texas.  On July 29, daytime temperatures in Houston broke the 100 degree mark for the first time in 2017. Temperatures reached a high of 102 degrees at Houston Hobby airport, two degrees higher than the daily high temperature record set in 2015. In San Antonio, high temperatures broke 100 degrees nearly every day for the last two weeks of the July. The city broke daily record high temperatures two days in a row, one on July 29 with a high of 104, one degree higher than the previous record set in 1946, and one on July 30 with a high of 105, one degree higher than the previous record set in 1960.

The end of the fourth of July weekend brought massive downpours to North Texas and the Dallas Fort-Worth area. Multiple high-water rescues were performed across the state as flooded streets trapped drivers in their vehicles and swift waters swept several people into rivers and lakes. At least one tornado caused damage in Livingston as part of a severe weather event on July 15, which knocked power out to nearly 33,500 homes due to heavy rain, high winds, and frequent lightning. Lightning was also responsible for multiple house and apartment fires, as well as the cause of injury to one man who was struck during a storm.

For the most part, crops and pastures were fair to good across Texas in areas that received precipitation. In early July, hail and strong winds damaged crops in the High Plains and the South Plains, causing significant cotton yield losses. Very warm conditions from the Rolling Plains to the Coastal Bend caused moisture to dry quickly, leaving crops parched. South and Central Texas began experience drought towards the middle of the month, and cities such as New Braunfels and San Marcos entered Stage 1 water restrictions to reserve groundwater. Although periodic heavy downpours helped relieve drought, hot temperatures kept areas in the Panhandle, Central, and South Texas abnormally dry or in moderate or severe drought.