Where should you store champagne?
In general, all Champagnes improve with aging. This is especially true with vintage Champagnes. Age Champagne for a few years as long as you have a good place to store it. You shouldn't keep it in the fridge; a wine refrigerator set somewhere in the 50's (F) is ideal. If you don't have a wine refrigerator, next best is a dark, cool closet (light is bad for Champagne and wine in general. The place should be fairly humid because the cork can dry out if it's not humid (which is true for all corked wine). And it should be a place that's free from vibrations such as washing machine, doors opening and closing, etc. If you want to store Champagne, you really need to have these conditions, otherwise there's no sense in storing.
Agree, a wine refrigerator is best for champagne. The recommended storage temperature for champagne is 45 degrees Fahrenheit or 7 degrees Celsius.