Gas prices have climbed every day for the past 25 days, reaching a national average of $3.59 per gallon Monday, the most expensive national average ever for Feb. 11, according to AAA.
During just the past two weeks, average prices have climbed almost 25 cents, the biggest jump in gas prices in almost a year.
“This is a very early rise,” says Tom Kloza, chief oil analyst at the Oil Price Information Service.
“January has tended to be a quiet month through the years, but the rally really began in earnest around Jan. 15.”
Gas prices tend to increase in late February as refineries shut down for maintenance ahead of the busy summer driving season.
There are three reasons for the spike, say analysts.
Higher crude prices. This rise, especially overseas, has pushed up prices at the pump, says Michael Green, a spokesman at AAA.
“This year oil prices are rising with expectations that the global economy will continue to improve,” says Mr. Green. “Gas prices are intimately connected to oil prices, [which are] very much connected to what is going on in other parts of the world. Events overseas have a big effect on prices American motorists pay at the pump.”
In fact, crude oil prices have risen 10 percent during the past two months, and the price of crude accounts for almost 70 percent of the cost of a gallon of gas, according to the US Energy Information Administration.
Seasonal changes. Refineries usually shut down for maintenance in late winter, temporarily reducing gas supplies. As per federal requirements, refineries also begin transitioning at this time of year to summer blend gasoline – a more environmentally-friendly, and expensive, blend to produce. This reduces current winter blend gas supplies.