for advanturers there are many places like the Phong Nha cave in Quang Binh, Phanxipan peak in Lao Cai, Central highlands, Mekong deltas, Halong bay etc.
If you mean th weather, which I think you do......Compared to Florida yes, compared to Alaska no.......on the west side of the cascades it can go down in the teens for a couple weeks and the rest...