This table describes how many people visit Yosemite each month, so you can get a sense for which months are busier than others. (Data are from 1985-2007.)
Month
| % of visitors | # of visitors |
| January | 3% | 104,257 |
| February | 3% | 110,257 |
| March | 4% | 145,275 |
| April | 6% | 215,700 |
| May | 9% | 348,839 |
| June | 13% | 447,740 |
| July | 16% | 559,904 |
| August | 17% | 590,475 |
| September | 13% | 445,971 |
| October | 9% | 325,419 |
| November | 4% | 160,466 |
| December | 3% | 114,660 |
Source: http://www.nps.gov/yose/planyourvisit/visitation.htm
Besides the table, here is a graph that showing the number of visitors from 1979 to 2010
Source: http://yosemite.visionbib.com/
This Graph is showing the average temperature of Yosemite National Park
Source: http://www.city-data.com/city/
