Wine grapes are already turning color. What does that mean for this year's harvest? 

The wine grape harvest is ahead of schedule and Greg Boeger of Boeger Winery in El Dorado County says he thinks it's the heat. 

"The nighttime temperatures throughout the spring were higher than normal, so it gave a total heat accumulation this year above normal," he said. 

Wine lovers rejoice, the heat doesn't seem to have damaged the grapes. 

"It looks like a good crop. The quality looks good so far. We're looking forward to a good quality harvest," Boeger said. 

Boeger says harvest events may be in August instead of September this year.