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Motorists planning on road tripping should be prepared to shell out around 24 cents a gallon more for gasoline during the peak summer driving season, defined as April through September.
Peak prices will average $3.95 for a gallon of regular gasoline, up 6.3 percent, or 24 cents, from last year's April-September driving season, according to the agency's monthly Short-Term Energy Outlook. That represents an increase from last month’s peak season prediction of a $3.295 average.
Prices in South Carolina typically are about 20 cents lower than the national average, meaning gas should peak around $3.80 in the Charleston area.