The screen presence includes both visual and verbal brand cues before and after the weather. It begins on 1 January and will be broadcast three times per day.
The deal will push a "shop local" agenda and encourage shoppers to change their habits.
Tim Hurrell, Co-operative Food's managing director said: "This is a great deal for the Co-operative Food and gives us a unique opportunity to encourage consumers to think about the way they shop.
"We are not looking at this deal as a simple media spend but as a partnership that will give us a platform to promote local shops, local suppliers and seasonal food."
The deal was agreed directly with ITV by the Co-op's head of sponsorship Liz Matkin.
David Croft, ITV director of regional sales said: "ITV National Weather has peaked with audiences of up to seven million viewers in the early evening news slot. This sponsorship is a great brand fit and will give The Co-operative a fantastic opportunity to put its brand in front of a valuable audience on a regular basis."
The Co-op will replace current sponsor Topps Tiles.
The Co-op recently started city-wide home delivery trials in Manchester, which it hopes to roll-out nationwide.