PG&E's chief risk officer Sumeet Singh told WSJ that California's dry weather conditions could result in more rolling blackouts this year than last year. The company has trimmed trees away from powerlines and inspected the grid as the wildfire season began earlier this month. 

June is typically the month the wildfire season in California begins. The state is already battling an extreme drought, and the first heat wave of the season hit last week. The risks of another heat wave are increasing for next week. 

The hottest and most fire-prone months are nearing as a second heat wave of the season could arrive as early as next week. 

How the season turns out may depend on the immediate climate in the state. Extreme heat and drought are several factors that may produce dry fuels and eventually spark fires.