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, CA Real Estate & Homes For Sale. 1  1218 White Sands, San Marcos, CA 92078. 2  1722 Morgans Ave, San Marcos, CA 92078. 3  818 Genoa Way, San Marcos, CA 92078.  638 Chesterfield Circle, San Marcos, CA 1  92069. 727 Pebble Beach Dr., San Marcos, CA 92069.  672 Feather Drive, San Marcos, CA 1  92069. 1502 Caminito Aguar, San Marcos, CA  92078.