The average gas price in San Bernardino County rose 6.6 cents per gallon during the past week, reflecting the volatile market, according to GasBuddy.com.


"Highlighting what I've reiterated for weeks, we're seeing gasoline prices continue their volatile trend, and this time that trend is upward," Patrick DeHaan, senior petroleum analyst of GasBuddy.com, said.


The county average was $3.82 per gallon Sunday, still 6.4 cents lower than a month ago. The national average was $3.49, up 6.3 cents from last week.


The last time wholesale gasoline prices were at the same level as Sunday, the national retail gas price average was much higher at $3.66. And so DeHaan said retail prices will increase 15 to 20 more cents fill the gap.


"So far, the national average hasn't taken off like the number of Detroit Lions football fans, but I do expect that over the next week, we'll see a continued rise in gasoline prices," DeHaan said. "Prices will rise slowest in the Rockies, while moving fastest in the Great Lakes, as we've already witnessed."


DeHaan said he doesn't expect California to see that high of an increase in the next month, predicting that the price will remain between $3.75 and $3.95 per gallon.