Over 1,000 houses have burned in Southern California, and contributing factors include an environment under stress and an uncooperative climate.
If there's less water around, vegetation will be drier and more vulnerable to fires. If weather is hotter, the fires are more likely and more likely to spread.
Despite this rather simple logic, scientists quoted here say there's not enough statistical evidence to connect fires to climate change.
That's actually bad news. If the fires are being driven by local habits, then things are really going to get worse when climate change makes things worse (more heat, less snowpack, rain shifting north, etc.)
This piece does a good job slamming Californians for making things worse in two ways -- by abusing groundwater resources and contributing to climate change. (True.)
Bottom Line: As ye sow, so shall ye reap.