Tangy-sweet and loaded with vitamin C, grapefruit is available year-round, but peak season for many varieties occurs during the months of January through April.
Storing whole grapefruit: Store whole grapefruit at room temperature up to a week, or for 2 to 3 weeks in the refrigerator. Tip: You’ll find grapefruit to be juicier and sweeter if you return it to room temperature right before serving.
Storing cut grapefruit: Once you've peeled or cut into a grapefruit you should refrigerate any leftovers right away. Wrap the cut fruit tightly with plastic wrap or store in an airtight container and use it within three or four days.