The national average price for a gallon of diesel set yet another record high of $3.157 after a 0.9-cent hike for the week ending Oct. 23, the Energy Information Administration said.

The national average rose despite the fact that prices in all regions except for the Midwest and Rocky Mountain dropped significantly. The Midwest rose a whopping 9.1 cents to $3.235. That increase, which was the largest, propelled prices to steal California’s claim to having the most expensive diesel. In an unusual turn of events, California prices fell below the national average after dropping 5.8 cents to $3.152. The Rocky Mountain region trails the Midwest by just 0.3 cents at $3.232.

The largest price drop was posted in the Lower Atlantic region as prices fell 8.4 cents to $3.115. The cheapest region in which to fill up is once again New England at $2.873 after a 4-cent decline.

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