WHOM traces its history to the 1940s as a weather station, sending temperature and climate readings from atop Mount Washington to meteorologists in Boston. As an FM station for the general public, WHOM signed on the air July 9, 1958 as WMTW-FM, owned by Mount Washington Television (an ownership group that included former Maine governor Horace Hildreth) along with WMTW-TV (channel 8). The WMTW stations were sold to Jack Paar of Tonight Show fame in 1963; Paar, in turn, sold them to Mid New York Broadcasting in 1967.
WMTW-FM was sold to Alpine Broadcasting in 1971; Mid New York retained WMTW-TV, and as a result the radio station changed its call letters first to WWMT, then to WMTQ in 1973, and then finally to the current WHOM in 1976 (previously used by New York City radio stations 1480 AM; now WZRC, and 92.3 FM; now WBMP).
The station offered a beautiful music format consisting of instrumental versions of pop songs from artists like Henry Mancini, Ray Conniff, Percy Faith, Chet Atkins, and Herb Alpert, as well as several soft vocals per hour like The Carpenters, Dionne Warwick, Johnny Mathis, and Perry Como. This format continued through the 1980s. In January 1990, WHOM abruptly dropped the easy listening format for a soft adult contemporary format (dubbed "soft and easy favorites" by the station), though it continued to market as an easy listening station and retained its airstaff. In the mid 1990s, the station began adding softer songs by hot AC and CHR artists and began playing current product. By 2000, WHOM was more of a mainstream adult contemporary station.