Average gasoline price jumps 2.9 cents per gallon Average gasoline prices in Washington have risen 2.9 cents per gallon in the past week, averaging $3.90/g on Jan. 23, according to GasBuddy’s survey of 2,666 stations in Washington. Prices in Washington are 15.2 cents per gallon higher than a month ago and stand 3.5 cents per…
