Can Forecast be copied?

Question

If you use moves or abilities like Role Play and Skill Swap?

Answer 1

Well, it can, but it won't work.

>Castform transforms with the weather.

It would switch, but it would only work if it was a Castform.

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Answer 2

For Skill Swap, it WOULD work, except the ability does nothing. So congrats, you just lost your ability.
I would guess that it would be the same for Role Play, since other Pokémon don't have sun, rain and hail forms.
Note that you can surpress this ability with Gastro Acid, which will make the Castform turn back into its normal forme. If Castform regains Forecast, it would revert to the forme it would be supposed to be in (that is, if there is weather).

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