K-C Radio: Talker Jim Grayson Retires From KMBZ-FM

Jim Grayson

Jon Grayson, a veteran talk radio host and co-host of KMBZ-FM’s midday show, has retired, ending a 30-year career spanning markets like Tampa, Nashville, St. Louis, and Kansas City. Grayson, who joined KMBZ in 2019 and co-hosted the 10 a.m.–2 p.m. slot with Jayme Monacelli, aired his final show this week.

In a heartfelt farewell, Grayson shared his lifelong passion for talk radio, recalling his start as a college student caller, breaking into the industry at 19 as a producer and fill-in host. His career included a long run in St. Louis, hosting the nationally syndicated Overnight America and working at KTRS and KMOX before joining KMBZ.

Grayson cited personal reasons for his early retirement, including an upcoming international move and lifestyle changes to ensure his and his wife’s “safety and sanity.” While stepping away, he hinted at a possible return, joking, “You know I could never keep my mouth shut for that long.”

Known for his conversational, community-driven style, Grayson aimed to make his shows feel like barroom discussions, fostering connection among listeners. He expressed gratitude to his audience, colleagues, and Monacelli, praising their “true partnership.” 

KMBZ has not yet named a replacement for the midday slot.