Ruby and Simon, twelve-year-old twins, are passing their first summer at their family's new farm in Wisconsin, when a mysterious man shows up to explain that the strange weather they've been having is attached to Simon's mood and that Simon is the youngest (and potentially the most powerful) Storm Maker the world has ever seen.
A delightful middle-grade reader with a girl narrator telling the story, but centered around her twin brother (thus making it palatable for readers of either sex).
It is a delight to read a book that has average protagonists. Normal teens with normal tantrums and intelligences, confusions, and fears. Thrust into overwhelming and frightening situations, they act like twelve-year-olds, not politically saavy adults or exceptionally gifted and talented wonder-kids. It is no mysterious family secret or hidden bloodline, just chance that gifts Simon with his powers.
Written well for the age group, not dumbed down ("for kids") but rather written with an age-empathic vocabulary and sentence structure.