AAA says gas prices shot up nearly 5 cents nationally as Hurricane Isaac shut down refineries in the Gulf of Mexico before making landfall Tuesday evening.
According to AAA, gas prices went up Wednesday across the nation, putting the national average at its highest level since early May.
Although gas prices have jumped across the country, AAA believes the spike will be short-lived.
"Although we expect higher prices at the pump, we don't expect to see the dramatic overnight increases that occurred following Katrina," Jenny M. Robinson, Manager of Public and Government Affairs for AAA Mid-Atlantic said in a statement.
"As Gulf Coast refineries get back online, prices will likely retreat, which is expected to happen by this time next week. Plus, we normally see gas prices trending down after Labor Day, due to lower demand and a switch to fall gas blends."
AAA says every state in the country is currently paying more Wednesday than on Tuesday, with regional variations.