The average price for gasoline Monday in Oklahoma was $3.193 a gallon, nearly 30 cents below the national average, according to AAA’s Daily Fuel Gauge Report. That is about 45 cents lower than it was a month ago. Drivers in Oklahoma City paid an average of $3.133 a gallon, down from $3.621 last month. Tulsa-area drivers paid an average of $3.102. A month ago, the average price was $3.531.