Gas prices have dropped slightly over the last week in Montana.
Today's AAA National Average is $4.00 per gallon; Montana is slightly more expensive, with prices averaging $4.05 per gallon. In Wyoming, the average is $4.10; in Idaho, it's $4.32, but in North Dakota, the statewide average is just $3.85. The lowest prices are mostly found in the south, with North Carolina the lowest at $3.26 per gallon.