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.
Hotels within 5 miles of San Marcos. 1  Hyatt Place San Diego/Vista-Carlsbad 3 stars Excellent 4.5 / 5( 899 genuine reviews ) Hotels.comÂ® RewardsFor every 10 nights, get 1 free! 110 people looked at this hotel in the last hour. Most recent review Nice hotel that is close to Lego Land.