average rainfall in houston
Average Annual Rainfall. Houston has an average annual rainfall of 53.34 inches. Though rainfall comes fairly evenly throughout the months of the year, June is Houston's rainiest month, with an average of 6.25 inches.ocated in the far eastern part of the state, which is by far the wettest, Houston gets more rainfall than any of the other major cities like San Antonio, Dallas and Austin, which are all more centrally located. Compared to other major cities in the United States, Houston's average rainfall is near the top.