The average price for a gallon of gas in Wyoming increased another two cents last week, according to and its survey of nearly 500 gas stations throughout the state.

"The average price of gasoline is at $3.57 per gallon - a month ago, we were at $3.46, and a year ago we were at $3.53," senior petroleum analyst Gregg Laskoski said.

Laskoksi also said higher crude oil prices are driving gas prices higher, but not by much.

"We did see crude oil prices go up, trading between $105 and $107 per barrel, but we didn't see a lot of movement there, and that's good news for consumers," Laskoski said.

Gas is selling for as low as $3.31 in Casper, $3.45 in Cheyenne and $3.41 in Laramie. The national average was unchanged last week at $3.68.