Cool from today to tomorrow Details >
Dec 06, 2013; 1:55 AM ET Five-day Weather Forecast for Tucson, AZ
Plunging temperatures will threaten California agriculture with a frost and freeze this week.
A storm system interacting with cold air in the West will lead to low snow levels in Oregon and California.
A large portion of the nation will have good weather for the trip home on Sunday, but there will be a few areas dealing with snow, ice, rain and travel delays.