Gas prices in Massachusetts jump 19 cents in a week and rise above national average

BOSTON - Gas prices in Massachusetts are rising fast and are now higher than the national average.

The average price for a gallon of unleaded in Massachusetts is now $3.78, AAA said Monday.

That's up 19 cents in the last week and 26 cents in the last month.

The national average is $3.76, according to AAA. Just a week ago, Massachusetts gas prices were 20 cents below the national average.

"While prices continue to decrease in many regions of the country, lack of inventory and sustained demand here in the northeast are driving up our prices at the pump," AAA's Mary Maguire said in a statement.

California still has the highest prices in the country at $5.57 a gallon.