Baltimore, MD - Feb. 12, 2024 - (FOX45) Gas prices in Baltimore have increased by 4 cents per gallon in the past week, now averaging $3.23/gallon, with prices 20 cents higher than a month ago. The national average price of diesel has also risen by 6.9 cents in the last week. According to GasBuddy, refinery issues and the transition to summer gasoline are expected to further push prices upward in the coming months. The cheapest gas station in Baltimore was priced at $2.94/gallon, while the most expensive was $3.87/gallon. Nationally, the average price of gasoline has risen by 5 cents per gallon in the last week, now averaging $3.17/gallon, up 9.6 cents from a month ago and 20 cents lower than a year ago