Summers are warm, with mean temperatures of 83, an average low of 72 and high of 95 in July. Winters are mild with a mean temperature of 48, an average low of 36 and average high of 60 in January. The average rainfall of 34 inches a year helps maintain the areas natural beauty and replenish the Edwards Aquafer. Current 1997 estimates are 38,500 for San Marcos, and 77,000 for Hays County. It should be noted that the majority of Southwest Texas State University's 21,000 students are not included in the populations figures.
Local employers find workers east to train, loyal and dedicated.
San Marcos draws workers from all levels from a labor pool of 1.2 million from eight surrounding counties. Many San Marcos residents also work in the major cities of Austin and San Antonio, deciding to live in San Marcos to avoid the congestion of the big cities. This rate has fluctuated very little as new residents are assimilated into the workforce quickly. More than 2,500 acres of developable land zoned for light industry is currently being developed with both interstate and rail access.