photo courtesy yosemite tioga road in yosemite national park will open for the season at noon friday since 1980 this ties for the earliest opening with 1987 when the road was also opened on may 2 last year the road opened on may 11 the average opening date is may 27 in time for memorial day weekendtioga road bounded on both sides by state highway 120 is the popular crossing of the sierra nevada that tops out at 9943 foot tioga pass and leads east down to mono lakehoto courtesy yosemite tioga road in yosemite national park will open for the season at noon friday since 1980 this ties for the earliest opening with 1987 when the road was also opened on may 2 last year the road opened on may 11 the average opening date is may 27 in time for memorial day weekend