When to plant grape vine.

Hi there.

Im sure this has been answered before but could not find anything about it.

Wanting to plant my Valiant grape seedling, well it is bigger than a seedling looks more like a cutting. I am in hardiness zone 2 and are still having a few -3 nights and was wondering if I can plant now or if I should wait a few weeks? are grape vines hardy enough to withstand a bit of cold at night?

Thanks.