The following link leads to a very informative article about different temperatures recorded in Alaska:
Jan. 23, 2021, is the 50th anniversary of Alaska’s all-time cold temperature: minus 80 degrees Fahrenheit, recorded by a weather observer at Prospect Creek Camp.
www.gi.alaska.edu
That was 50 years ago, however. But since Alaska is such a large place, there are climate differences from one region to another, and so ambient temperatures, wind, humidity, and so on. For example, while the temperature in Fairbanks may be -20 degrees F, about 100 miles away near Delta Junction and Tok (two very small towns by the road), the temperature could be -30 degrees and colder. Sometimes very low temperatures are recorded by Tok and Delta Junction.
The problem when it is cold and windy is that if one is wearing outer garments that don't resist wind (wind blocking layers), then one would get cold in a hold period of time. When very cold outdoors on a windy day, it is best to dress warmly in synthetic inner layers, and outer layers that block the wind. Roomy winter insulated boots and gloves (mittens are better than gloves), and head and face-covering masks (balaclavas). Any exposed flash or skin can get frost bitten. Keep in mind that too much activity can make you sweat, and this can cause a lot of problems. Just pace yourself, and remove some of the inner layers if you feel like you are starting to sweat (store them in the backpack or bag you are carrying).