The average price of a gallon of gasoline fell below $4 for the first time since July, according to AAA gas prices. 

Gasoline prices dropped more than 12 cents per gallon in a single week, but they remain higher than they've ever been at this time of year. Prior to this year, the national average had never risen higher than $4 per gallon during November. 

Tuesday's average gasoline prices were nearly $1 higher than they were a year ago. 

The drop in prices at the pump comes as oil prices continue to fall. West Texas Intermediate gasoline prices, the American benchmark, were at $84.45 per barrel on Tuesday morning, down from $104 at the end of October, according to Oilprice.com. 

Brent Crude, the European benchmark, had also fallen to $89.43 per barrel on Tuesday morning. 

California continues to be the most expensive gasoline market, with drivers paying $5.83 per gallon at the pump — even higher than Hawaii's average of $5.64 per gallon. 

The cheapest gas was found in North Carolina, where drivers were paying $3.34 per gallon, followed by Georgia, at $3.54 per gallon, and Texas, at $3.58 per gallon.