The price of gasoline in the Sacramento area rose another 6.8 cents over the past week to an average of $3.95 a gallon, according to national gas price tracker GasBuddy.com.
Area motorists might be seeing $4-a-gallon gas at most pumps as soon as tomorrow.
Today, AAA put the average price of unleaded regular in the Sacramento area at $3.98 a gallon. Statewide, AAA said the average price of unleaded regular today is $4.17.
By GasBuddy's measure, the current Sacramento-area average price of gas is 1.9 cents per gallon higher than it was a year ago but 48 cents higher than last month.
Nationally, GasBuddy said, the average price of gas increased 11.9 cents per gallon over the past week to $3.68 - up 42.2 cents from last month and 16.7 cents higher than a year ago.
Analysts had little comfort to offer consumers.
"The steady climb of retail gas prices is likely to continue following double-digit increases in wholesale prices with fuel production tightening in the majority of the country's refineries," said Gregg Laskoski, senior petroleum analyst for GasBuddy. "Los Angeles has climbed to $4.28 per gallon with a 55-cent average price increase in the past month, and that rate was surpassed in Chicago ($4.09) and Detroit ($3.86), where motorists saw 63- and 64-cent respective increases over the same period.
"New York crossed the $4 threshold too."
In California, analysts said gas prices have been affected by reduced production by refineries gearing up to produce more-costly spring/summer-blend gas.