If the cigars are a psych-support item, or a nicotine addiction supplement then keep them. Otherwise discard as nicotine is a vaso-constrictor and will hinder your efforts at keeping warm.
Warm, dry & hydrated are the priorities of winter preparedness, but everyone here knows that.
I Do not get nicotine From cigars nor am I "Addicted" to them for that reason, I Smoke them for their flavor and fragrance. But Yes they are there for morale as I love smoking cigars during the winter specially in heavy snow storms.