Bradycardia can be caused by: 1  Changes in the heart that are the result of aging.  Diseases that damage the heart's electrical system. These include coronary artery disease, heart attack, and infections such as endocarditis and myocarditis.
Portland Weather In May. The highest recorded temperature in May for Portland for the past 70 years was 100 degrees Fahrenheit, most recently measured on May 28, 1983, and the normal high is 67.
Average Weather in The Dalles Oregon, United States. The Dalles has a mediterranean climate with dry hot summers and mild winters. The temperature typically varies from 29Â°F to 89Â°F over the course of the year, and is rarely below 17Â°F or above 101Â°F. The hot season lasts for 93 days, from June 16 to September 17, with an average daily high temperature above 79Â°F.