Thunder God controlling weather (7)
I believe the answer is:
undergo
'weather' is the definition.
(thesaurus)
'thunder god controlling' is the wordplay.
'controlling' says the answer is hidden in the clue (the solution is controlled or contained).
'UNDERGO' is hidden in the letters of 'thunder god'.
(Other definitions for undergo that I've seen before include "Experience, be subjected to" , "Experience - bear" , "Guerdon (anag.)" , "experience needed" , "Stand" .)