Thursday
A foggy morning across many parts of central and southern England and Wales as well as parts of Ireland. The mist and fog patches slowly lifting to leave some sunny spells, although in some areas they may last throughout the day. Reza weather in Scotland will prevent the formation of fog although there would be some low clouds and perhaps even some drizzle over western coast. Eastern Scotland should be dry and brighter and there will be some sunny spells for eastern England as well. Highs at 7 to 9C.

Thursday Night
Widespread and dense fog across many parts of England, Wales and Ireland over night into Friday morning. Visibility will be very poor in places. There will be some cloud affecting northern western Scotland with a risk of drizzle here. Eastern Scotland will be mostly dry with some clear spells. Lows at 1 to 3C.
 

Friday
High pressure is centred over the country on Friday. This will be bringing lots of mist and fog across many parts of England and Wales, the most dense of it across central, eastern and southern areas. Some cloud affects western Scotland where there will be some drizzle and patchy rain at times. Broken cloud across Ireland mostly dry although some drizzle affecting western coast. Mostly dry in West Wales and Southwest England with a few bright spells. Highs at 6 to 8C.

Saturday
High pressure will be to the south of the country on Saturday. There will be some mist and fog patches through many parts of England and Wales as well as eastern Scotland. Some lower cloud may affect western coast of England, Wales and Scotland with a risk of some drizzle here later in the afternoon. The best of any brightness is likely to be across more eastern areas. Highs at 6 to 8C.