According to AAA, the national average for gasoline has gone up more than 30 cents since this time last month, and it has gone up more than 40 cents in Ohio and West Virginia.

According to Fred Rozell of Oil Price Information Service, the jump has been caused by Hurricane Isaac.

"The hurricane has caused the spot markets to go wild, and there's always fears that there's going to be some catastrophe that's going to limit supply, and that's what you see with the wholesale spot price; it's jumped," Rozell said.

States like Ohio have been hit the worst, Rozell said, because many of the gas stations are owned by large companies. Large companies can raise prices at all of their stations, while smaller stations don't have that power. Rozell said the wholesale price of gas has gone up about 40 cents and that retailers had to react, since they only make about 10 to 15 cents per gallon they sell.

Residents in the Ohio Valley said they're doing their best to deal with the pain at the pump.

"I'm sure probably tomorrow they'll be $3.85, next day they'll be $3.95, and I don't know anything to do about it. Just pay and pray I guess," said Thomas Hensley of Brooke County.

One resident said he got advice to fill up yesterday.

"My mailman told me to go get it, because he gets it every day -- every other day -- for his route. He said, 'You better go buy it today.' So I went and got it yesterday for $3.62. Today, it's $4.09," said Carl Mossor of Rayland, Ohio.

However, Rozell said the high prices shouldn't last long. They should start to go down in the next few days, he said, adding that by the end of September, the national average should be close to $3.50 a gallon.