They have confirmed that the Tioga pass will not be open for Memorial weekend.

Although the Glacier point road could well be open, good news for any visitors to Yosemite at the weekend if it is.

Glacier Point Road:
The Glacier Point Road will open on Friday, May 28 at noon, conditions permitting. Expect 30-minute delays between Chinquapin and Badger Pass Sunday night through Friday afternoon (except Memorial Day).

Tioga Road:
The Tioga Road will not be open for Memorial Day weekend; there is no estimated opening date.