Gas pump prices hit 28-month high

Gasoline pump prices reached a 28-month high today even though oil and gas supplies in the U.S. continue to grow and demand for gas is weak.

The national average for regular gasoline rose to $3.133 a gallon. That's about $1.20 more than the price at the pump two years ago, according to AAA, Wright Express and the Oil Price Information Service.

Just eight states have average prices less than $3 a gallon. The cheapest is $2.94 a gallon is in Missouri. Hawaii has the highest average of $3.746 a gallon for regular unleaded.

Tom Kloza, OPIS chief oil analyst, predicted gas prices will range from $3.50 to $3.75 a gallon this spring and then drift lower, to between $3 and $3.40 a gallon.