Disease and harsh weather continue to push up food costs for consumers. But they're likely to go even higher from the ongoing drought hitting much of the Southwest.
The U.S. Department of Agriculture's Economic Research Service said that California's drought could increase food price inflation above the historical average in the weeks ahead.
"It doesn't take long for the effects of what's happening at the farm level to transfer to the checkout counter," said Annmarie Kuhns, a researcher at the USDA, told CNBC. "It's usually just about a month for the impact to take hold."
The Golden state produces half of the nation's fruits and vegetables, and most of its high-value crops such as broccoli, tomatoes and artichokes.
But the drought has been pushing the cost of water higher, forcing farmers there to leave fallow hundreds of thousands of acres of land, and making foods more expensive.
Timothy Richards, a professor of agribusiness at Arizona State University, told CNBC in April that he believes between 10 and 20 percent of the supply of certain crops from the state could be lost due to the drought.
Because of that, Richards said there would be price increases on such items as berries, broccoli, grapes, melons, tomatoes, peppers and packaged salads.
"I would expect a 28 percent increase for avocados and 34 percent for lettuce," he said.