Describe ‘lower elevation’.
Below 2,000 feet above sea level. In Southern California, snow regularly falls above 5,000 feet and sometimes gets down to 4,000 feet or lower, but very rarely below 2,000 feet.
In 1979, Beaumont, in Riverside County, which sits at about 2,000 feet above sea level was blanketed with snow, but there was none below that elevation. That was the last time I saw snow in a large community other than a mountain resort in Southern California.