Even though gas prices have crept up almost 20 cents per gallon in the last month, prices this summer are expected to be the lowest since 2009.Average retail gasoline prices in Connecticut are averaging $2.85 per gallon as of Monday, May 25, according to GasBuddy.com\u2019s daily survey of 1,540 gas outlets in Connecticut. This compares with the national average of $2.75 per gallon, according to the gasoline price website.Connecticut prices yesterday were 106.1 cents per gallon lower than the same day one year ago and are 16.6 cents per gallon higher than a month ago. The national average has increased 21.0 cents per gallon during the last month and stands 91.4 cents per gallon lower than this day one year ago.\u201cAs the summer driving season has begun, gasoline prices have risen slightly as demand rises and parts of the country have seen supply and refinery disruptions,\u201d said Patrick DeHaan, GasBuddy senior petroleum analyst. \u201cThere\u2019s light at the end of the tunnel, however. We\u2019re expecting over the next two weeks trends will shift and relief will start flowing to pumps as issues fade into the background.Overall, this summer will be the cheapest at the pump across much of the U.S. since 2009 with prices likely remaining well below year ago levels. I forecast that the national average will not breach $3 per gallon this summer,\u201d DeHaan said.