Costco Grafton Gas Prices
950 Port Washington Rd, Grafton, WI 53024
Warehouse #628 · Most expensive of 11 in Wisconsin
Most expensive of 11 in Wisconsin
Prices last refreshed — always verify at the pump.
30-day price trend
Located at 950 Port Washington Rd in Grafton, Wisconsin, this Costco gas station opened on August 30, 2007 and has been serving members for over 18 years. The pumps run 6AM – 10PM Monday through Friday, 6AM – 8:30PM on Saturday, and 6AM – 7:30PM on Sunday, while the warehouse itself opens 10AM – 8:30PM on weekdays. Members at this warehouse can also access a food court, a pharmacy, a tire center, an optical department, and hearing aid services. Regular pump prices at this station have climbed about $0.46 over the past two weeks, from $3.979 two weeks ago. Premium has climbed about $0.46 over the same period.
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Frequently asked questions
What are the gas station hours at Costco Grafton?
The Costco Grafton gas station is open 6AM – 10PM Monday through Friday, 6AM – 8:30PM on Saturday, and 6AM – 7:30PM on Sunday. Hours can change on holidays — check the warehouse page on Costco.com before a long drive.
How much is gas at Costco Grafton right now?
Current pump prices at Costco Grafton are regular at $4.439 USD per gallon and premium at $5.439 USD per gallon. Prices are pulled from public sources and can change throughout the day — always verify at the pump before fueling.
Where is the Costco Grafton gas station located?
Costco Grafton is at 950 Port Washington Rd, Grafton, WI 53024. The gas pumps are on the warehouse property — look for the Costco fuel canopy near the parking lot.
When did the Costco Grafton warehouse open?
The Costco Grafton warehouse in Grafton, Wisconsin opened on August 30, 2007.
What other services does Costco Grafton offer besides gas?
Beyond the gas station, Costco Grafton also has a food court, a pharmacy, a tire center, an optical department, and hearing aid services. Department hours can differ from the main warehouse — check signage on arrival.
Is Diesel available at Costco Grafton?
No — Diesel fuel is not sold at the Costco Grafton gas station. Only regular and premium unleaded gasoline are offered at this location. For the nearest Costco Diesel, check a larger warehouse or business center nearby.