World crude-oil futures rose last week after U.S. supplies of petroleum dwindled in cold weather. It’s one of the factors keeping gasoline prices high in recent weeks, and Triple-A spokeswoman Rose White says production is down at several refineries as they gear up for summer.

White says inventories are expected to improve within a few weeks, but Iowans won’t see prices fall. She actually expects to see them go up some more, since all the increase hasn’t yet been passed on to consumers. But in the next few weeks when refineries begin to increase production and inventories increase, she says we should see a drop in the prices.