Hathaway Pines is an unincorporated community in Calaveras County, California, 8km south of Arnold and 20km northeast of Angels Camp. It lies at an elevation of 3323 feet. Hathaway Pines' post office was established in 1943; it has the zip code 95233.The place's name honors Robert B. Hathaway, a vacation resort promoter who became the first postmaster.This region experiences warm and dry summers, with no average monthly temperatures above 71.6F. According to the Kppen Climate Classification system, Hathaway Pines has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.