Herman Albert (Lee) Dayton, 61, a veteran Washington broadcaster and the announcer of the NBC-TV weekly program "Meet the Press" for 25 years, died of cancer Saturday at Loudoun Memorial Hospital in Leesburg.

Mr. Dayton came to Washington in 1942 after a brief stint with NBC radio in New York and Richmond. He joined radio station WMAL here before going back to NBC about 1952. One of his principal assignments was announcing the "Meet the Press" program and he continued to do it until mid-November.

He was born in Cornwall, Conn., and grew up in Ardsley-on-Hudson, N.Y. He graduated from the Kent School in Kent. Conn., and then spent a year in Cologne, Germany, as an exchange student. He began his broadcast career shortly after returning to this country.

Mr. Dayton was a member of the Society of the Cincinnati from the State of New Jersey, the Washington Board of Trade, the Washington CARE Committee, the City Tavern Club and the Middleburg (Va.) Tennis Club. He had lived in Washington until about four years ago, when he moved to a farm he owned in Middleburg.

Survivors include his wife, the former Sarah Hale, of the home in Mid dleburg; his mother, Mrs. Hughes Dayton. of Philadephia, and a brother, William B. Dayton, also of Philadelphia.