What Region Is The Highest And Driest In Texas?
What Region Is The Highest And Driest In Texas? The Trans-Pecos is the driest region in the state, with an average annual regionwide precipitation of 11.65 inches, while the Upper Coast (45.93 inches) and East Texas (44.02 inches) are the wettest. At most locations rainfall for any single month will vary appreciably from the norm.