Berryhill was a farmer and small business owner who represented the 25th Assembly District from 2006-2010 and the 8th Senate District from 2010-2018.
Andreas Borgeas currently holds the seat in the 8th Senate District and shared a statement about his passing.
"Tom was my mentor and imparted the importance of respect, civility and collegiality in California politics," he said. "My wife Anna and I would like to express our deepest condolences to the Berryhill family as they endure this difficult time."
The cause of Berryhill's death has not been made public at this time.