(Portland, OR) -- Gas prices are the highest ever for this time of year. Triple-A reports Oregon's average of five-06 is 16 cents a gallon higher than the previous record in September 2022. The high prices are caused by the U.S. war with Iran. The average price for diesel in Oregon is six-86 a gallon, which is down two cents from the record high set last week. Gas and diesel prices are slowly declining.