BOISE — Average retail gasoline prices in Idaho have risen 5.7 cents per gallon in the past week, averaging $3.82 a gallon on Sunday. This compares with the national average that has increased 1.3 cents per gallon in the last week to $3.81 a gallon, according to an Idaho-based gasoline price website.

    Moreover, prices on Sunday were 13.5 cents per gallon higher than the same day one year ago and are 28.9 cents per gallon higher than a month ago. The national average has increased 14.6 cents per gallon during the last month and stands 14.9 cents per gallon higher than this day one year ago.

    "Even with Isaac long gone, the oil industry is still bringing capacity back online at refineries and oil rigs, which is keeping pressure on prices," said GasBuddy.com Senior Petroleum Analyst Patrick DeHaan in a news release. "Supply remains tight across the country as we slowly approach the transition to winter-spec gasoline, but I continue to be firm in believing that the national average will start to decline towards the end of September, as is typically the case."    

    GasBuddy operates the website www.idahogasprices.com and over 250 similar websites that track gasoline prices at over 140,000 gasoline stations in the United States and Canada.