Corazon San Antonio and Christian Assistance Ministry are among the groups going out in the streets, offering rides to shelters and donating winter clothing.
A strong arctic cold will bring temperatures to near or below freezing before sunset Thursday over the Hill Country and Austin and reach San Antonio by 8 p.m., according to the National Weather Service.
Weather service, city, county offer guidance before bitter cold arrives keranews.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from keranews.org Daily Mail and Mail on Sunday newspapers.