Average retail gasoline prices in Minnesota have risen 14.4 cents in the past week, averaging $3.47 per gallon Sunday, according to GasBuddy’s daily survey of 2,856 gas outlets in Minnesota. This compares with the national average that has increased 1.4 cents per gallong in the last week to to $3.48, according to gasoline price website MinnesotaGasPrices.com.

Including the change in gas prices in Minnesota during the past week, prices Sunday were 13.6 cents per gallon higher compared to the same day one year ago and are 47.4 cents per gallon higher than a month ago. The national average has increased 21.1 cents per gallon during the last month and stands 4.4 cents per gallon higher than this day one year ago.

"The national average has ticked higher in the last week, as rising oil prices have put upward pressure on gasoline prices," said GasBuddy.com Senior Petroleum Analyst Patrick DeHaan. "Unfortunately for angry motorists, there doesn't seem to be much relief in sight, at least for the time being, as retail prices continue to climb in virtually all areas of the country," DeHaan said.

GasBuddy operates MinnesotaGasPrices.com and over 250 similar websites that track gasoline prices at more than 140,000 gasoline stations in the United States and Canada.