Massachusetts gas prices up a penny a gallon, AAA Southern New England says

The average price of gas in Massachusetts was $3.50 a gallon in the latest weekly AAA survey, up 1 cent from the previous week’s average, AAA Southern New England said Monday.

Prices locally are up 1 penny over the past month.

The current national average is $3.61 a gallon. A year ago at this time, the Massachusetts average price was $3.43, AAA Southern New England said.

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In the latest weekly survey, the range in prices was 32 cents, from a low of $3.37 a gallon to a high of $3.69.

The weekly surveys focus on self-serve, regular unleaded gas.