If you plan on making lemonade or a batch of cocktails that require fresh citrus juice, be sure to use citrus that is at room temperature. According to Food & Wine Cocktails 09, refrigerated citrus will yield up to a third less liquid than fruit at room temperature. To bring cold citrus to room temperature quickly, soak the fruit in really hot water for five minutes before squeezing. Ironically enough, when a recipe calls for citrus zest it's best to use the fruit right out of the fridge.
Do you normally store your lemons, limes, and oranges on the counter or in the fridge?