The state's average is $2.38.

>> Read more trending stories  

The same is holding true for other parts of the country.

In central Ohio, gas is approaching $2 a gallon also. A month ago the price was nearing $3, coming in at $2.82 a gallon.

According to the Columbus Dispatch, the national average this week was $2.82. It was the lowest since January and unusually low for the summer.

So why is the price declining?

It is thanks to growth in the domestic oil supply and the discovery of new sources of petroleum.