The average price for gas in Massachusetts is $3.589 a gallon in the latest weekly survey from AAA, down 3 cents a gallon from the previous week's average, AAA Southern New England said.
Local prices have fallen 18 cents over the past month, AAA Southern New England added.
The current national average price for gas is $3.41 a gallon. A year ago at this time, the Massachusetts average price was $3.33.
AAA's weekly surveys focus on self-serve, regular unleaded gas.
Chris Reidy can be reached at reidy@globe.com.