Gas Prices on the Rise Ahead of Spring Break, Summer Travel Seasons

Gas prices rising ahead of spring break travel season, averaging $3.36/gallon nationally as of Tuesday
Prices up 21 cents over past month and 9 cents in past week due to increased seasonal demand
Aside from spring break travel, prices rising ahead of annual switch to more expensive summer-grade gasoline
Summer blend gasoline more expensive to make but required by EPA from June - September to reduce emissions
Prices expected to peak around Memorial Day then begin dropping again after summer travel season ends