If you're looking to fill up your tanks, you might want to stop at a gas pump this Friday. Ontario gas prices are going to rise on Saturday according to gas price analyst Dan McTeague. However, this won't be the only jump the pumps will see as prices are expected to keep rising over the next few weeks.\nIn a tweet, McTeague revealed that Ontario will see gas prices rise by three cents on Saturday, which will set prices in the GTA to around 83.9 cents a litre. Narcity reached out to Dan McTeague for more details on why prices are escalating. "This is the cost associated with the shift from winter to summer fuel," he wrote. According to the American Automobile Association (AAA), summer blend fuel is more expensive to produce, and it's also more efficient. "Conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which is one reason why gas mileage is slightly better in the summer," according to a news release. However, Dan McTeague says the summer-blend isn't the only reason prices are rising, and the COVID-19 lockdown is also playing a factor. "Refineries don’t want to be caught with fuel they can’t sell, given plummeting demand with Covid’s lockdown, and most don’t have expansive inventory. So they are cutting back on production, giving support to gasoline and diesel, while hastening they drop in oil prices."\n⛽️ Price ⚠️: summer blend fuel has arrived: #Toronto #GTA #Montreal #Quebec #Ottawa #Hamilton #LdnOnt #Niagara #KW #Barrie #Kinhston #Peterborough #Windsor and most of #Ontario to 👀 a (net) 3 cent/litre RISE (to 83.9 in the GTA) Where are the “experts” who said it would fall? 🙄— Dan McTeague (@GasPriceWizard) April 16, 2020\nWhile areas such as Toronto, Ottawa, Hamilton, Barrie and Windsor are all expected to see the price of gas rise this weekend, McTeague says it's only the beginning.\n"Prices could continue to inch up as I have been suggesting for weeks," he warned Narcity.\nSince January, gas prices have been steadily falling as COVID-19 made its way across the globe.\nBecause of the steady decline, Ontario has seen some of the lowest gas prices we've had in over a decade.\nRefiners are cutting back on their production of fuel they can’t store. This keeps the supply in step with plummeting demand. As a such, refiners are buying a lot less oil. Consider as well, that Trudeau hiked carbon taxes on fuel, a weaker Loonie & now, shift to summer spec gas https://t.co/2bv6OsruyJ— Dan McTeague (@GasPriceWizard) April 17, 2020\nSo, if you're looking to fill up your tank sometime this weekend, Friday night might be your best bet.