You will definitely find darker days all throughout the winter in Alaska. But if you’re upwards of the Arctic Circle in the Brooks Range in the Interior of Alaska, you’ll find temperatures hovering at -25 degrees Celsius during the winter months.
If you’re anywhere on the coast of this gigantic state, including Southeast and the Aleutian Islands, temperatures can dip below freezing, but it’s far more rare. This question is entirely dependent on where in Alaska you’re referring to. How cold does it get in Alaska in the winter?