Rising temperatures pose new challenges for firefighters who have made incremental progress against a massive wildfire in central California that has injured four people as it has become the biggest blaze in the state so far this year.

The Gifford Fire in San Luis Obispo and Santa Barbara counties is now the largest California wildfire of the year with over 82,000 acres burned, and officials warn it could get significantly worse when hot and dry weather hits the region this week.

Over 1,000 firefighters continue to battle a wildfire in Southern California that has scorched over 65,000 acres, prompted evacuation orders and caused three injuries, according to officials.