Weather Control is the ability to manipulate or change the weather at will. The area of impact could be as small as changing the weather inside the room or could affect a larger area.
Background[]
Weather control was introduced on The Thundermans in the episode, Back To School as Keely's main power. Keely used this power to demonstrate to Phoebe and Max her powers. At first, Keely doesn't have full control over the power and even accidentally strikes Rodney's lunch with lightning. This caused Keely to doubt herself, but, with Phoebe's helps, Keely finally learns to control her powers and helps save the day by creating an electrically charged cloud to counteract the lasers to save Phoebe and Max.