With orange juice concentrate, you can have a tasty margarita in no time flat.

Source: http://www.delish.com/entertaining-ideas/parties/cocktail-parties/summer-cocktails

This apricot-infused classic cocktail is perfect for a warm summer afternoon. Apricot brandy and apricot puree give the drink its standout flavor. Mixed with light rum and a splash of triple sec and lime juice, it's irresistible.

Source: http://www.delish.com/entertaining-ideas/parties/cocktail-parties/summer-cocktails

Muddled fresh strawberries and canned pineapple add a fresh-fruit texture to this refreshingly sweet cocktail. The white rum is subtle, mixed with simple syrup, lime juice, and pineapple juice.

Source: http://www.delish.com/entertaining-ideas/parties/cocktail-parties/summer-cocktails

Strained, pureed red grapes are the base for this sweet and tangy grape cocktail. If you have very sweet grapes, you might not need the full amount of honey. Taste as you go. For a special treat, freeze extra whole grapes ahead of time and float them in the drink along with the ice cubes.

Source: http://www.delish.com/entertaining-ideas/parties/cocktail-parties/summer-cocktails