The average retail price for regular gasoline across the country rose to $3.78 a gallon Monday. U.S. Energy Information Administration Spokesperson Amerine Woodyard says that’s up 3.7 cents from a week ago and up almost 43 cents from 4 weeks ago. She says pump prices were highest in the West Coast region, breaking the 4 dollar mark, at 4.05 a gallon, up 8 cents from a week ago. Prices were lowest in the Rocky Mountain States at 3.47 a gallon, up 6.2 cents. The average price in Wyoming, $3.25-point-7 per gallon, is the lowest average out of the 50 states. AAA Auto Club points out that usually the shift to a summer blend at the refineries along with their annual spring maintenance doesn’t impact prices until later in the year. The club is predicting that as a consequence, the price of gasoline will peak earlier this year.