(USA TODAY) -- Tens of thousands of evacuees returned home this weekend after devastating wildfires scorched San Diego County, but it may be only a temporary respite for drought-stricken California.
A big fire in San Marcos that started near Cocos Drive on Wednesday was 85% contained Sunday afternoon and was expected to be fully contained by the end of the day, according to Kevin Lucero, a spokesman for CAL FIRE, the state's fire agency, which worked with local agencies to fight the fire.
Lucero says 1,995 acres have burned in San Diego County, destroying 39 single-family homes and one commercial structure. Two other single-family homes have been damaged, he says.
There were no injuries in the Cocos fire, and officials are investigating whether it was intentionally set, he says.
A badly burned body was found in a transient camp after another fire.
Oceanside police arrested a man for adding dead brush onto smoldering bushes in a small fire, and two others were arrested for starting at least two small fires in Escondido.
Government officials are wary that the extremely dry conditions, high temperatures and low humidity could result in many more fires this summer.
The National Interagency Fire Center says there is "above-normal fire potential" for "much of California," southern Arizona and southwestern New Mexico this month and next month.
In June, there will also be "above-normal fire potential" for northern California, Nevada and "much of Oregon," the center says.
The San Diego area "normally doesn't see wildfires this early in the season," Lucero says.
The wildfire season there often begins in June, and the entire state hasn't received a break from wildfires since last summer, he says. Normally, a rainy period occurs, and wetter conditions provide a break from wildfires from December through May, Lucero says.
The California Department of Forestry and Fire Protection has already responded to more than 1,500 fires this year, compared with about 800 during an average year.
"We have had dry conditions for three years straight," says Brad Alexander, a spokesman for the California Governor's Office of Emergency Services.
In 119 years of recorded history, 2013 was the driest calendar year for California, the U.S. Geological Survey says.
According to the U.S. Department of Agriculture, the ongoing drought will "likely" have a major impact on agricultural production this year for a state that is a major producer of the nation's fruits, vegetables, tree nuts and dairy products.
With insufficient water and higher production costs, food producers "may opt to reduce total acreage," driving up consumer food prices for several years, the Agriculture Department says.
Much of California's farmland receives water from snowfall in the Sierra Nevada. As of April 1, the California Department of Water Resources measured the statewide water content of snowpack at only 32% of the average snowpack on April 1.
That date, the U.S. Geological Survey says, is usually when the snowpack is at its peak and begins to melt into streams and reservoirs.
Contributing: The Associated Press