According to this article, the allowance of hunting big game (primarily deer and caribou) in the state will take effect in July of 2022. Read here for more details https://hardairmagazine.com/news/alaska-to-allow-big-game-airgun-hunting/
How would the clinate/cold affect the equipment?
Hope it's a mistake hunting muledeer and whitetails in Alaska would be tough? They do have them but both are extremely rare and very limited in range. When they speak of deer it's the Sitka blacktail. Trust that is what was meant by deer, and the reporter is a clueless goob. Otherwise it would be like opening hippo hunting in Arizona to airguns?
Alaska and it's game laws are hard-core, air gunners gaining a toehold there is no small accomplishment. The gains made in the last few years are beyond what most would dare to dream possible.