Dymond was born in Aberdeenshire, Scotland,[1] and emigrated to Canada in his teens, where he completed his high school education.
He received his Doctor of Medicine, from Queen's University in 1941 and he did post-graduate work in Kingston and Toronto before joining the Royal Canadian Army Medical Corps.
He served in Canada, England, and Western Europe with the Surgical Division of Number 10 Canadian General Hospital.
Dymond started his political career as a Councillor in Port Perry, in 1948, and he later served on the School Board.
After leaving cabinet, Dymond remained a backbench Member of Provincial Parliament (MPP) until the 1975 election when he retired from politics and returned to his medical practice in Port Perry.