Due to orographic lift and the glacier's proximity to the Pacific Ocean, more precipitation falls on the Blue Glacier than any other glacier in the lower 48 United States. About of precipitation falls on the upper reaches of Mount Olympus and Blue Glacier each year. During winter, most of the precipitation on Blue Glacier consists of snow. In addition, a significant amount of rain falls on the Blue Glacier as well, especially during spring and summer. Because of this high precipitation and the volume of this body of ice, the Blue Glacier contributes a significant amount of water to the Hoh River via Glacier Creek. The Hoh River eventually discharges in the Pacific Ocean after flowing down through temperate rain forest in Olympic National Park.