Average retail gasoline prices in Michigan have risen 13.7 cents per gallon in the past week, averaging $3.31 per gallon Sunday. This compares with the national average that increased 0.8 cents per gallon in the last week to $3.23/g, according to gasoline price website MichiganGasPrices.com.
Including the change in gas prices in Michigan during the past week, prices Sunday were 25.3 cents per gallon higher than the same day one year ago and 10.4 cents per gallon higher than a month ago.