Rainfall could exceed a quarter of an inch in Shasta and Tehama counties, potentially disrupting outdoor Halloween activities. Mountain areas may see light snow accumulations, with minor travel impacts possible on Cedar Pass in Modoc County. Temperatures will remain cool, with valley highs in the low 60s and mountain highs in the low 50s, dropping further in the evening. Breezy conditions may develop on Sunday, but strong gusts are not expected.