RICHMOND, Va. (CBSDC/AP) — Virginia motorists are paying 39 cents more a gallon for self-serve regular gasoline than they were a month ago.

The AAA Fuel Gauge shows that the average price per gallon is $3.65, compared to $3.26 in January.

The statewide average has increased 4 cents a gallon since Monday.

The average price for the entire Washington metro region is $3.79, up 17 cents from a week ago and a jarring 38 cents from a month ago.

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AAA Mid-Atlantic attributes the spike in prices mainly to an increase in the price of crude oil. The organization also says refineries are shutting down for seasonal maintenance, creating a drop in crude oil supplies.

The national average is $3.75, up from $3.30 in January.

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