Canada's gas price average booked its biggest weekly gain since August, according to data from Kalibrate, reaching $1.648 per litre of regular fuel as of Feb. 13. At this time last year, the Canada-wide average was $1.

The average price for a gallon of regular gasoline in California has risen 44 cents from a month ago, according to AAA.

Gas prices in the Las Vegas valley have jumped this week, up 14 cents since Sunday according to Gas Buddy. It's a seasonal trend, but California refinery regulations that went into effect in mid-January could send prices even higher in Nevada.