Is there a tm for hail in b/w2?

Question

if there is where it is I need it for a battle with my neighboor

Answer 1

Mistralton PokéMart - 50,000 PokéDollars

full list of TMs/ HMs in B2W2

Answer 2

Yes it's in the Milstralton city Pokemart for 50, 000

Source: http://pokemondb.net/black-white-2/tms