Gutiberto Matias, 31, is in the intensive care unit at Palomar Medical Center where doctors have told family that he has pneumonia and a recurring fever.
"His brain is swollen," his niece Maria Baltazar said by phone Thursday. "His heart stopped beating (on Wednesday). His lungs aren't working well."
Matias' wife, 4-year-old daughter Brisa and 18-month-old son Brian have been hoping for good news, the paper reported.
Matias was hit by a lightning bolt about 2 p.m. on June 3 as he stood next to a palm tree in the yard of a house on Camden Place in San Marcos, San Marcos fire Battalion Chief Rick Vogt said.
He is the youngest of four brothers who all work for a local landscaping company, identified by Baltazar as Dave's Landscaping.
Read more about his condition in the full article in the North County Times.