The Rainmaker - by Joseph Anthony (1956)

Lizzie Curry is on the verge of becoming a hopeless old maid. Her wit and intelligence and skills as a homemaker can't make up for the fact that she's just plain plain! Even the town sheriff, File, for whom she harbors a secrect yen, won't take a chance –- until the town suffers a drought and into the lives of Lizzie and her brothers and father comes one Bill Starbuck … profession: Rainmaker!

IMDB info
Stars: Burt Lancaster, Katharine Hepburn, Wendell Corey
Production land: USA
Run time: ~121 min