With clear skies and light winds a widespread ground frost is expected for Saturday night, with an air frost away from built up areas.
General lows away from the coast are expected to hover just above or just below freezing, with well sheltered spots down to minus 3.
Patchy mist and fog is also expected overnight which could linger well into Sunday morning.
Sunday will be a dry day with some lovely spells of sunshine. After the chilly start temperatures will recover to 12/13C by the afternoon with another chilly night into Monday.