Rescue Team:Forecast

File:Water-Type Castform (Weather=Rain) on Stormy Sea.png

Castform (which has forecast as its ability) under the effects of rain.

Forecast is an ability introducen in Pokémon Mystery Dungeon: Red (and Blue) Rescue Team. It changes the Ability user's Type depending on the weather.

Under the influence of sunny weather, the Pokémon's type changes to Fire. Under the influence of Rain or fog, the Pokémon becomes a Water-Type. Under the influence of Hail (or snow), The Pokémon becomes an Ice-Type. If there is any other weather (Clear, Cloudy, or Sandstorm), The Pokémon's typing is unaffected.

Castform is only Pokémon who has this ability, however, it can also be acquired by other Pokémon through the ability Trace.

Trivia: Forecast can Also be activated during Cutscenes with dialogue. (as long as they are programmed to change the weather) An example of this can be when you fight Articuno after finishing the main story. However, in this case, Forecast will proceed to deactivate as the weather during the battle is programmed to be "Clear."