 The cold winds from the combined power of the Siberian High and Aleutian Low give Jōetsu an average of of snowfall that however tends to melt significantly even during the winter.On February 26, 1945, Jōetsu received as much as of snow in one day.The heaviest annual snowfall, since the beginning of regular snowfall measurements in 1953, was in the 1985/1986 season and the heaviest monthly total precipitation in January 1945, whilst the driest month was August 1985 with .