Experts say the seasonal switch to summer-blend gasoline is a major factor behind the increase, particularly on the West Coast.
SEATTLE — Gas prices in Washington are climbing sharply, with the state now posting some of the highest prices in the country.
The average price for a gallon of regular gas is about $4.29, according to AAA, up 6 cents from yesterday, 16 cents from a week ago and 47 cents from a month ago.
That rapid increase has pushed Washington to the third-highest gas prices in the nation, behind only California and Hawaii. Data from the U.S. Energy Information Administration shows a similar
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