The Halo Foods factory at Tywyn in Gwynedd will close today, with the loss of 105 jobs.
The company is moving production to its plant at Newport in South Wales.
It says all employees have been offered the chance to relocate, including financial support. A support hub in Tywyn will stay open until the New Year.
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Today will be dry for most with plenty of sunshine, but also a fresher breeze than recently.
Generally cloudy with fairly persistent rain through this evening, but the cloud and rain will break up overnight with drier conditions.
Wales fans are continuing to celebrate yesterday's historic Euro 2016 win over Northern Ireland, which sees them make the quarter finals.