The national average is of a gallon of gas is up 18 percent since the beginning of July at $3.67.
The average in California is $4.03. It's even more expensive in the Bay Area at $4.08 a gallon.
Experts say unrest in Egypt and production disruptions in the United States and other countries are pushing up the price of crude oil and gasoline.
Drivers can expect to see higher gas prices for at least the rest of the summer.