Months after gas prices reached all-time highs

drivers are feeling relief at the pump with the national average

under $4 per gallon for the first time in five months

The average cost of a gallon of regular gasoline in the U.S. is $3.99

While still more than what prices were at last year at $3.18

it's a major drop from when prices peaked at $5.01 in mid-June

The average national gas price has continued to drop

ever since its peak on June 14

In fact, the average price has gone down

At least one cent daily for 38 straight days