(Portland, OR) -- Temperatures are warm, but gas prices are relatively cool. Most states, including Oregon, are seeing fairly stable prices at the pumps. Crude oil prices are below 70-dollars a barrel and that's helping to prevent major swings in gas prices this summer. Triple-A reports the national average for regular slips one cent to three-14 a gallon. The Oregon average dips two cents to three-97 a gallon.