Cooler weather is giving a boost to crews battling a huge wildfire that's threatening nearly 2,700 homes in California's Santa Barbara County. The four-day-old fire in the Los Padres National Forest has blackened about 13 square miles. A county spokeswoman say it spread slightly during the night, but that firefighters were able to keep up with it. She says with today's forecast of lower wind and higher humidity, they expect to make progress today. Wildfires have charred more than 800 square miles of forest, brush and grass throughout the state and have destroyed at least 69 homes. At least 330 fires are still burning out of control. One firefighter has died of a heart attack.