Snowboard gloves are the most important thing you will need to purchase when you are buying your equipment. Conditions aside, your hands are one of the things that are constantly in contact with the snow and tend to give most people trouble when snowboarding. Whether you are renting a board, borrowing gear or own your own setup, make sure when you hit the hill you are strapped up and warm for a good day.
In most cases nowadays, Snowboard gloves are waterproof and will do the job just fine. I would recommend going with at least a medium priced pair of Burton or Grenade gloves. They have worked the best for me in the past and have always kept my hands warm. A lot of the gloves on the market have removable glove liners so you can leave them in on cold days or remove them in the prime spring conditions. It doesnt usually matter the weather conditions if you choose to wear or not wear gloves. If you are one of the brave and hit the slopes bare handed, you may be in for a long day of boarding.
Overall, Do not go cheap on your snowboard gloves or you will regret your day on the hill