When it is 57 degrees at Timberline Lodge, it is 39 degrees at the 10,240 foot Elevation. You lose 4 degrees for every 1,000 feet in elevation gain. A 57 degree temperature at Timberline Lodge will allow you to photograph the upper 1,000 feet (40 degrees) without heatwaves. This is nessesary when using a spotting scope, or astronomical telescope to search for a lost hiker, or human remains.