BOISE — Average retail gasoline prices in Idaho have risen 1.7 cents per gallon in the past week, averaging $3.86 a gallon on Sunday. This compares with the national average that has increased 2.3 cents per gallon in the last week to $3.86 per gallon, according to gasoline price website IdahoGasPrices.com.

    Moreover, prices on Sunday were 14.9 cents per gallon higher than the same day one year ago and are 24.5 cents per gallon higher than a month ago. The national average has increased 15.8 cents per gallon during the last month and stands 24.9 cents per gallon higher than this day one year ago.

    "The national average continues to hover near its higher ever September level," said GasBuddy.com Senior Petroleum Analyst Patrick DeHaan in a news release. "As we push deeper into September, the more optimistic I am that these high prices will begin to come down slightly, but with the recently announced QE3, I'm a bit concerned that prices won't moderate as much as previously expected as the dollar weakens, leading me to believe 2012 will have featured the highest yearly average ever."     

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