Wimmer was born on October 1, 1959 in Orem, Utah to Larry, an economics professor, and Louise Wimmer. He was raised in Provo, Utah. During high school, Wimmer began working as a ranch hand at Robert Redford's Sundance Resort for ten years. He originally expected a career in the ski industry.
In 1990, he played Alex in the television movie The World's Oldest Living Bridesmaid.
In 1991, he played Willie Husband in the film, Late for Dinner.
In 1993, he played a rapist the television film, Kiss of a Killer.
On December 31, 1996, Wimmer married Liza Utter. As of June 15, 2000, they had separated. He was later married to Susanne Sutchy, but they divorced in 2013.