(August 18, 2023) WASHINGTON, D.C. — The national average for a gallon of gas staggered five cents higher since last week, despite lower demand and the price of oil falling several dollars per barrel and struggling to stay above $80. But the potential for hurricane development and forecasts of an expanding heat dome over Texas, Oklahoma, and Kansas next week could push oil prices higher. Refineries in these states may have to curb production to deal with the sizzling temperatures.