The US Department of Agriculture is estimating that domestic potato output will drop 6.1 per cent this year, which would be the lowest level since 2010.
The United Potato Growers Of Canada reported that almost 18% of potato crops in Manitoba - the country's second-largest growing area - were left unharvested.
He told Bloomberg: 'French fry demand has just been outstanding lately, and so supplies can't meet the demand'.
Potato crop yields dropped in areas like Alberta and Manitoba in Canada and Colorado, Idaho, North Dakota, and Minnesota in the U.S. because of cold-weather snaps from September to November.
And in addition to being pricier, fries may also be shorter: Crop damage is causing potatoes to come in smaller, processors say.
Farmers in Alberta and Idaho were reportedly able to dig up some of the damaged crops for storage before they were completely ruined.
Potato processors in the USA have turned to foreign producers to help make up the loss. Manitoba and Alberta are the second- and third-largest growers in Canada, respectively, and the government is expected to release crop estimates Friday.
And the potato problems pair particularly poorly with an increasing demand for fries in Canada, home of poutine (a comforting dish of fries and cheese curds topped with gravy), as Northerners take more and more to the deep-fried side dish.
Worse still, crop damage means the potatoes' growth has been stunted.