Atenolol and chlorthalidone combination is used to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly.
San Marcos Average Weather. 1  The highest monthly average temperature in San Marcos for August is 70 degrees. 2  The lowest monthly average temperature in San Marcos for January is 55 degrees. 3  The most monthly precipitation in San Marcos occurs in January with 2.3 inches.  The air quality index in San Marcos is 22% worse than the national average.
San Marcos Campus. As the university's student population has grown â from 303 in 1903 to 38,808 in 2016 â our San Marcos campus also has expanded. Today, the campus has grown to 491 acres. Texas State has an additional 4,000 acres of academic, agricultural, research and recreational areas.