Eli5 || Why is Alberta/Saskatchewan usually colder than Anchorage, Alaska in the winters even though Alaska is nearer the arctic circle?

Question

Eli5 || Why is Alberta/Saskatchewan usually colder than Anchorage, Alaska in the winters even though Alaska is nearer the arctic circle?

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Answer 1

Anchorage is on the ocean, and because of water’s density it cools and warms more slowly. So when the air gets cold, the still warmer water helps moderate temps a little warmer.