The Met Office has issued a yellow "be aware" warning of ice for Denbighshire, Flintshire, Powys, Wrexham and Monmouthshire.
It says there could be difficult driving conditions in places.
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An overnight vigil is taking place this evening to commemorate 100 years since the bloodiest day in the history of the British Army.
The showers will ease overnight with a brisk wind around the coasts and relatively mild temperatures!
We visit two communities in the South Wales Valleys which are preparing to mark the commemorations