Gas prices have risen nearly 3.5 cents per gallon in Maine in the past week.

The gasoline price-monitoring website reports Monday that the average cost of a gallon of gas in Maine is $2.78, up 12.8 cents from a month ago

The price per gallon in Maine is 3 cents lower than the national average.

The company blamed the price increase on a decline in both crude oil and gasoline inventories.

The Maine price is based on a survey of more than 1,200 gas stations.