All four of Castform’s different forms are now available in Pokémon GO and are influenced by dynamic weather

Akin to how Castform is supposed to behave, the adorable little Weather Pokémon has four different forms in Pokémon GO. They are its Normal form, Sunny Form, Rainy Form and Snowy Form – each of which is influenced by the mobile game’s dynamic weather mechanic. If the real weather outside is cloudy, windy or foggy, Castform will be in its Normal form; if the weather is sunny, Castform will be in its Sunny Form; during rain, Castform is in its Rainy Form; and during snow, Castform is in its Snowy Form. After capturing a Castform in Pokémon GO, it’s supposed to stay in that state forever.