NORTH DAKOTA (KXNET) — Gasoline prices have increased by just a few cents compared to this time last month, but the cost to fill up the tank has declined by nearly 40 cents per gallon since last year. The national average fuel price is about $3.16, with Mississippi seeing the cheapest state-le vel prices at $2.68 and California with the most expensive at $4.67. After a month-long pause on tariffs on Canadian and Mexican imports, the Trump administration proceeded at the beginning of March to impose 25% tariffs on the two neighboring nations, including a limited 10% tariff on Canadian energy. However, on March 6, the president announced a pause on tariffs until April 2. GasBuddy projects states in the Northeast could see the most significant spike in fuel prices as a result of potential tariffs, possibly by 20 to 40 cents per gallon, as this region relies heavily on Canada's New Brunswick refinery. Meanwhile, by April, gas prices may decrease as a result of the Organization of the Petroleum Exporting Countries' plans to boost crude production. This increased output, however, is just one of several factors influencing prices in the month ahead. "While OPEC has signaled its intent to stabilize the market, policy decisions from the White House could introduce further uncertainty, making it difficult to predict where prices will head next," GasBuddy analyst Patrick De Haan said in a statement this month. "However, nearly every year sees a seasonal spring increase, which could eventually push prices higher ahead of summer." Stacker compiled statistics on gas prices in North Dakota. Gas prices are as of March 27. North Dakota by the numbers- Gas current price: $3.09- Week change: +$0.08 (+2.8%)- Year change: -$0.31 (-9.1%)- Historical expensive gas price: $4.80 (6/15/22) - Diesel current price: $3.45- Week change: +$0.00 (+0.1%)- Year change: -$0.44 (-11.2%)- Historical expensive diesel price: $5.62 (6/25/22) Metros with most expensive gas in North Dakota#1. Fargo-Moorhead (ND only): $3.18#2. Minot: $3.07#3. Bismarck: $3.06#4. Grand Forks (ND only): $3.03 States with the most expensive gas#1. California: $4.67#2. Hawaii: $4.53#3. Washington: $4.13 States with the least expensive gas#1. Mississippi: $2.68#2. Oklahoma: $2.73#3. Louisiana: $2.76 This story features writing by Tim Bruns and is part of a series utilizing data automation across 50 states. Close Thanks for signing up! Watch for us in your inbox. Subscribe Now Today's Top Stories SIGN UP NOW ...read more read less