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To solve questions of this kind, you have to understand the role of setting in a story. Stories do not exist to describe settings. Settings exist as a place to stage stories. Settings contribute to a number of aspects of a story. 

They contribute to the plot, obviously, when the material circumstances affect the action. 

They contribute to the mood. Fog and rain enhance a mood of misery or dread. Sunshine and blue skies enhance a mood of joy and peace. 

They contribute to characterization. How the characters react to the setting, whether they react to it or not, what they notice or do not notice about it, whether they love it, hate it, or are indifferent to is, all speak to their character. (For example, is your character one who makes a distinction between -25 and -30 or one who would just think of both of them as bloody cold.)

They can contribute to style and voice. 

So when you are considering whether to include a detail of setting or not, or which words to use to describe it, ask yourself what affect your choice to include it, and your choice of how to express it, affects all of these aspects of the story. 

Think of a story like iron filings around the tip of a magnet. They align along the lines of magnetic force. That is what every detail, every element of your story, setting included, needs to do, line up along the lines of magnetic force in your story. 

Ultimate, determining whether the details you choose and the way you express them line up with the lines of magnetic force in your story is a matter for your own aesthetic sense to determine. There is no paint-by-numbers rule for it. So think through all of the elements of your story and ask of every detail, does it contribute, and does it align.