Gas prices drop slightly ahead of Memorial Day Weekend

Data pix.

SAN DIEGO --The average price of a gallon of self-serve regular gasoline in San Diego County dropped a half-cent Friday to $3.989, the 17th decrease in the last 18 days.

The average price has fallen 11.1 cents during the past 18 days, including 1 cent Thursday, according to figures from the AAA and Oil Price Information Service.

It is 4.1 cents less than one week ago and 7.6 cents lower than one month ago, but 23.4 cents more than one year ago.

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