Two I can think of in San Francisco, although I am not certain the first one was a daily (and it wasn't on weekends):
For two years in the 1970s, KPIX ran Jack Narz Concentration only on Wednesday nights at 7:30 (and briefly ran Garry Moore To Tell the Truth, which KBHK had run daily, on Fridays before Name That Tune started).
KRON ran the first few episodes of Trebek Jeopardy! on Saturday nights. I didn't know it was intended to be a daily until Alex said "We'll see you tomorrow" at the end of the first episode.