The national average for a gallon of regular is now $3.28, up about a dime from just last week. In Pennsylvania, the statewide average now stands at $3.55. One week ago, it was $3.44, so that too marks a significant increase. In Lewistown, the price of a gallon of regular grade gas is even higher… $3.69. A gallon of diesel locally now averages $4.47. These prices come from GasBuddy. To keep track of it, visit gasbuddy.com.