Average retail gasoline prices in Missouri have risen 0.1 cents per gallon in the past week, averaging $3.51 per gallon yesterday.
This compares with the national average that has increased 5.9 cents per gallon in the last week to $3.67 per gallon, according to gasoline price website MissouriGasPrices.com.
Including the change in gas prices in Missouri during the past week, prices yesterday were $1.01 per gallon higher than the same day one year ago and are 0.9 cents per gallon lower than a month ago.
The national average has decreased 0.7 cents per gallon during the last month and stands 98.2 cents per gallon higher than this day one year ago.
"Gasoline prices continue to slowly advance, but with major storms impeding the activity of refineries, it shouldn't come as a shock," said Patrick DeHaan, GasBuddy.com Senior Petroleum Analyst.
"I believe that we may see additional impacts with Tropical Storm Lee as many oil platforms have already ceased production, and there may be refineries that shut due to intense rain. The good news is that I do expect gasoline prices to being falling closer to the end of September as we switch back to cheaper Winter gasoline and the peak of hurricane season passes," DeHaan adds.
GasBuddy.com operates over 200 live gasoline price-tracking websites, including MissouriGasPrices.com. GasBuddy.com was named one of Time magazine's 50 best websites and to PC World's 100 most useful websites of 2008.