The national average price of a gallon of diesel fuel fell to $2.185, below $2.20 for the first time since they spiked in late March.

Weekly figures from the U.S. Energy Information Administration show the average price fell 1.6 cents this week. The highest average price was reported in the New England region at $2.382. The lowest average was in the Midwest at $2.124.

In late March, the average jumped suddenly from $2.017 to $2.221, more than 20 cents in just two weeks. But for the most part, diesel prices for 2009 so far have hovered between $2 and $2.30 per gallon.

Meanwhile, the average price of gasoline rose 2.9 cents to $2.078 per gallon. Diesel, on average, currently costs 10.7 cents per gallon more than gasoline in the U.S.