Saturday
England, Wales, and Scotland will see a dry and bright day with plenty of sunshine and light winds. Early fog or frost is possible, particularly in England. Ireland, however, will be breezy and cloudy, with rain moving in from the west later in the day. Temperatures will peak at 4°C in the southeast and 7-8°C elsewhere, with frost overnight in the east.
 

Saturday Night
Some light patchy rain is possible over the far western counties of Ireland and Scotland in the evening and night, but elsewhere it will stay dry with clear spells. Some frost and fog is possible over England and Wales. Minimum temperatures at -1C over England and Wales but 6-8C over Scotland and Ireland.
 

Sunday
A band of light rain will spread over Ireland, reaching Wales, western Scotland, and southwest England by evening. Further east, it will remain dry and bright with sunny spells. Highs will range from 4-6°C, with fog potentially suppressing temperatures in some areas, but 10C over Ireland.
 

Monday
Light rain will linger in the north and northwest during the morning, becoming confined to Scotland by the afternoon. Elsewhere, it will be a largely dry day with fresh winds. Afternoon temperatures will range from 5-7°C, with patchy frost overnight in southern areas.