Best way is entry hazards, all weather inducers lose 12.5% every time they switch in bar ninetales, abomasnow, and hippowdon, which is 25% and 6.25% for hippo. Adding 1 layer of spikes adds another 12.5% The easiest way is to bring something that can hurt them. Tyrannitar is weak to the same stuff as terrakion, thus a terrakion counter can do some damage and force tyrannitar out. Tales is crap, speced toad can OHKO it with hydro pump under the sun. Rain has an advantage as politoad can hit all weather inducers for stab super effective damage, again bar abomasnow and almost no one uses hail.
@douchemon: cloud nine is to gimmacky and those pokemon all lack a niche, bar cloud nine, which is only a temporary solution. And never give a weather move to your weather inducer, only exception is ninetales, because ninetales sucks