PHILADELPHIA (CBS) — Gasoline prices are falling before the Thanksgiving holiday weekend.

The average price of regular gas has fallen nationally to $2.20 per gallon – a drop of six cents over the past two weeks.

Trilby Lundberg, an industry analyst, predicts prices will continue to fall until a meeting of oil-producing nations later this month that leads to a “credible agreement to freeze or reduce” production.

According to AAA in Pennsylvania, the gas price average is at $2.37, which is down three cents in the last week.

In New Jersey, it is $2.21 per gallon, down four cents since last week.

In Delaware, the average price is $2.11, which is down one cent in the last week.