"Topanga Temperature Topples to 18°"
Temperatures ranging as low as 18 degrees to 27 degrees gripped Topanga Monday night. Pipes froze and frost covered the entire area. More cold weather is expected. Cover the pipes, and let the cat in.
[From Wikipedia, “Climate of Los Angeles”:]
The lowest temperature was 18 °F (−8 °C) on February 6, 1989... in the San Fernando Valley.