South Dakota's gas prices fell from last week, despite the national average price of gasoline rising.
The average price in South Dakota fell 1.7 cents last week to an average of $3.39 per gallon, according to the latest GasBuddy survey of over 600 stations in South Dakota.
Prices are up 1.3 cents from last month and down $1.30 from this time last year.
The national average price of diesel is $3.87 per gallon, down from 1.6 cents last week.
Nationwide, the average price of gasoline rose 5.6 cents per gallon in the last week, averaging $3.57 per gallon.
"With the Fed meeting this week to potentially alter interest rates again, we could see some turbulence in oil markets, potentially impacting states where gas prices were quiet this week, while the states that saw a big jump last week could see some moderate relief in the week ahead," said Patrick De Haan, head of petroleum analysis at GasBuddy.