Rain (2001)

Set in contemporary America's heartland, Rain tells a story of murder, sex, and redemption set against the backdrop of a dead-end town suffering through a severe drought. Patsy, the Sheriff's wife is having an affair with Paul, another woman's husband. The Sheriff's adopted teenage son is having an affair with Paul's wife, Ellen, a woman with home the Sheriff once had an affair himself. As the summer gets hotter and the rain fails to arrive, the fields, the buildings, and everyone's private lives are set to burst into flames.