Or perhaps it's the close proximity to the food prep that knocks out another advantage for wondering whether wines can or should be stored in the frig. Either way, the short answer is an emphatic, "No," a typical household refrigerator does not provide optimum conditions for storing wine for more than a day or two.
Why the Kitchen Refrigerator is Not Ideal for Storing Wine
The common kitchen refrigerator maintains a chilly 35-38°F temperature, with relatively low levels of humidity (in the 30% range). Optimum temperatures for storing wine range from 45-60°F, with ideal levels of humidity hovering at around 70-90%. Furthermore, wines need to be kept free from excessive vibration, and that hefty motor that runs round the clock in your kitchen refrigerator would be a source of constant vino vibration.
What About Wine Refrigeration Units
Wine refrigeration units maintain ideal temperatures specific for storing wine, in the 45-60°F temperature range. They are specifically designed to keep vibration to a minimum, while holding the wines sideways in a cool, dark environment. However, wine refrigeration units are not geared for controlling humidity levels, that big task is left to the wine cabinet options for wine storage.
Wine Storage 101
While normal refrigerators do not provide an optimum environment for storing wine, you don't have to invest in a fancy cellar to get the job done. Just remember to keep your wine cool, keep it dark, keep it still and keep it sideways if you've got natural cork closures in your wine. If you can add some humidity and maintain consistency in temperature, then you'll have most of your wine storage bases covered.