(UNDATED) — The drop in gas prices has slowed a bit — though they’re still trending downwards. Triple-A Iowa reports the average price for regular-unleaded in the state is three dollars, 55 cents a gallon — only three cents lower than it was one week ago. The national average is currently three-87 a gallon. The cheapest average gas price in Iowa can be found in Des Moines at three-25 a gallon. The most expensive is in Sioux County in northwestern Iowa at three-80 a gallon.
