Average gasoline prices in Modesto have risen 55.6 cents per gallon in the last week, averaging $5.97/gallon on Oct. 3, according to GasBuddy’s survey of 201 stations in Modesto. Prices in Modesto are 92.9 cents per gallon higher than a month ago and stand $1.73/gallon higher than a year ago.

According to GasBuddy price reports, the cheapest station in Modesto was priced at $5.19/gallon while the most expensive was $6.69, a difference of $1.50/gallon. The lowest price in the state was $4.77 while the highest was $7.79, a difference of $3.02/gallon.

The national average price of gasoline has risen 11.1 cents per gallon in the last week, averaging $3.78/gallon. The national average is up 0.4 cents per gallon from a month ago and stands 59.8 cents per gallon higher than a year ago, according to GasBuddy data compiled from more than 11 million weekly price reports covering over 150,000 gas stations across the country. The national average price of diesel has declined 2.9 cents in the last week and stands at $4.86 per gallon.

Neighboring areas and their current gas prices include: Stockton - $5.98/gallon, up 58.8 cents from last week’s $5.39; Oakland - $6.24, up 54.9 cents from $5.69; and San Jose - $6.20, up 57.0 cents per gallon from last week’s $5.63/gallon.

“With gas prices continuing to surge on the West Coast and Great Lakes, the national average saw its second straight weekly rise. But at the same time, areas of the Northeast and Gulf Coast have continued to see declines as the nation experiences sharp differences in trends between regions,” said Patrick De Haan, head of petroleum analysis at GasBuddy. “Some West Coast states saw prices rise 35 to 55 cents per gallon in the last week as refinery issues continued to impact gasoline supply, which fell to its lowest level in a decade in the region, causing prices to skyrocket.”

GasBuddy data is accessible at http://prices.GasBuddy.com.