LUBBOCK, Texas (KCBD) - Heat returned to the South Plains with a high of 96 degrees in Lubbock on Saturday. So, it seems only appropriate that the first day of summer, Sunday, will feature afternoon temperatures at or above 100 for the region. Sunday is the first day of summer, and we're expecting temperatures at or above 100.(John Robison | KCBD Graphic) Looks like indoor dining may be a good idea for Dad, or a patio with some air flow.