That's according to the Lundberg Survey of fuel prices, released Sunday, which puts the price of a gallon of regular at $3.70.
Midgrade costs an average of $3.84 a gallon, and premium was at $3.95.
Diesel was up about four cents, to $3.99 a gallon.
Of the cities surveyed, Tucson, Ariz., had the nation's lowest average price for gas at $3.28.
Chicago had the highest at $4.07.
In California, the lowest average price was $3.69 in Fresno. San Franciscans paid the highest price at $3.83.
The average statewide was $3.78, up about a penny.
(Copyright 2011 by The Associated Press. All Rights Reserved.)