Average retail gasoline prices in Seattle have risen 1.1 cents per gallon in the past week, averaging $4.05/g yesterday. This compares with the national average that has increased 1.4 cents per gallon in the last week to $3.80/g, according to gasoline price website SeattleGasPrices.com.

Including the change in gas prices in Seattle during the past week, prices yesterday were 22.0 cents per gallon higher than the same day one year ago and are 37.9 cents per gallon higher than a month ago. The national average has increased 20.3 cents per gallon during the last month and stands 12.9 cents per gallon higher than this day one year ago.

“With the conclusion of the summer driving season, we can expect gasoline prices to go on a diet,” said GasBuddy.com Senior Petroleum Analyst Patrick DeHaan. “Like all diet programs, you may not see immediate loss in the short term, but we’ll likely see some loss in the longer term, say the next several weeks, as factors align in motorists favor- specifically as Isaac has exited without much ado, demand to see seasonal decline, and with cheaper to produce winter-spec higher RVP gasoline coming, there’s light at the end of the tunnel,” DeHaan said.

About SeattleGasPrices.com

GasBuddy operates SeattleGasPrices.com and over 250 similar websites that track gasoline prices at over 140,000 gasoline stations in the United States and Canada. In addition, GasBuddy offers a free smartphone app which has been downloaded over 20 million times to help motorists find gasoline prices in their area.