26 -- The Extraordinary Secrets of April, May, and June
Day 26 -- Book 26 The Extraordinary Secrets of April, May, and June -- Robin Benway
Three sisters who rediscover their powers in high school. April can see the future. May can literally disappear. June can read minds. Put the three together, and those around don't have a chance. They go through the typical angst of high school but use their powers to prevent, or try to prevent, certain things from happening.