nevada, cold hardiness and late blossoming are two separate characteristics but by careful breeding both traits can be manifested in the same plant.

Late bloom is not directly related to cold hardiness. Vitis Riparia grapes bloom very early and are cold hardy.
Muscadines bloom much later and are not very cold hardy.
For your region, a late bloom is an advantage. I know Quince and Medlar bloom late, just after Apples.
Most grapes bloom in June up here which is pretty late, compared to tree fruits.