Published: Feb 21, 2011 1:31 AM EST
Updated: Feb 20, 2011 10:31 PM EST

CAMARILLO, Calif. (AP) - A survey says the average price of regular gasoline in the United States has jumped 5.31 cents per gallon in the last two weeks.

The Lundberg Survey of fuel prices released Sunday says the average national price of a gallon of regular is $3.18.
      
Analyst Trilby Lundberg found in the survey completed Friday that the average price for mid-grade was $3.32, and premium was at $3.43.
      
Diesel was up nine cents, to $3.59 a gallon.

Billings, Mont., had the lowest average price among cities surveyed at $2.95 a gallon for regular. San Francisco was the highest among surveyed areas at $3.54.

Fresno had California's lowest gas prices at $3.42 for a regular gallon.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)