SIOUX FALLS,SD (KELO-AM / KSFY-TV) - The temperatures may not be the only thing going up...with refineries switching to production of summer blend fuels, you'll likely see gas prices increase slightly. Despite fairly level prices lately, the switch could drive prices up a bit due to what the industry calls "the beginning of summer driving season".
Regional averages find South Dakota drivers paying $2.33 per gallon, Iowa at $2.33 per gallon and Minnesota lower at $2.26 per gallon.
Lowest price seen recently is Sioux Falls is $2.07 per gallon. You can track the latest pump prices here: https://www.gasbuddy.com/