Gas prices are up for a second straight week in Michigan. AAA is reporting prices at the pump are up 13 cents compared to last week. Drivers in the state are now paying an average of $3.32 per gallon for regular unleaded. The highest price is in the Lansing and Grand Rapids areas at $3.34 a gallon. The lowest price is in Marquette at $3.28 a gallon. Locally, Port Huron area pumps are around $3.30 a gallon.