The recent run-up in gasoline prices will make the Fourth of July weekend the costliest for motorists since 2008.

Prices will average about $3.68 a gallon for regular-grade gas, up 17 cents from last year but well below the all-time $4.11 record set just after July 4, 2008.

Overall gas prices for the first half of 2014 are likely to average $3.52 a gallon, down 5 cents from the first half of 2013 and 12 cents cheaper than the first six months of 2012, when gasoline averaged $3.64.

At $3.38 a gallon, South Carolina is the cheapest state for gas.  California is the highest state for gas at $4.13 a gallon.