Ahead of the Labor Day holiday weekend, the average price of gasoline across Western Pennsylvania is four cents cheaper this week at $2.77 per gallon, according to AAA East Central’s Gas Price Report. Drivers in Beaver are paying 2.70 a gallon while in New Castle the average price is at 2.69. At $2.59, the national gas price average is on track to be potentially the cheapest Labor Day weekend average in three years. A year ago the average price in Western Pennsylvania was at 3.09 a gallon.