A colder blast is heading for the Houston-Galveston region this weekend, with freezing temperatures as low as 27 degrees and wind chills down to 18 expected from Sunday into next week, according to the National Weather Service. Matagorda County officials warn this front could bring the area’s first Hard Freeze Warning of the year, urging residents to protect people, pets, plants, and pipes. Residents should stay indoors, dress warmly if going out, insulate pipes, and bring plants and pets inside.