High pressure to the north of the UK and low pressure to the south on Monday maintains a northeast to easterly flow. A weak front may bring an area of patchy rain and sleet into far southeastern and southern parts of England accompanied by stronger winds here. Staying largely dry, fine and cold for most with the best of the sun to the northwest and west. Some isolated mist and fog patches are possible here. Wintry showers continue to blow into eastern coastal areas. These may push further inland to the north at times. High temperatures of 1 to 5C for many, 6C for coastal areas.
Patchy outbreaks of rain persist for far southeastern parts of England overnight while scattered, wintry showers continue to push in over eastern coasts of England, Ireland and Scotland. Clearer skies to the northwest and west will allow temperatures to widely drop to -1C or lower facilitating the formation of a widespread frost and ice patches. Lows could reach -8C or colder in sheltered Scottish glens. Where cloudier skies persist over eastern England overnight lows will typically range from 1 to 4C.
Low pressure to the south and high pressure to the north keeps a cold northeast to easterly flow over the UK and Ireland into Tuesday. Patchy rain, sleet and snow are expected over parts of England and Wales, but particularly eastern areas, while the north and west stays mainly dry. Some wintry showers will affect eastern Scotland too at times - these perhaps becoming heavier and more persistent to the northeast later. Mist and fog will be a risk over northwestern areas. High temperatures of just 0 to 4C for most, 5 or 6C for coastal areas.
Wednesday sees high pressure squeezed to the south as a front approaches from the northwest. Prior to this, it's a mostly dry and fine day for much of the UK and Ireland though isolated wintry showers affect eastern coasts of England, Ireland and Scotland as well as southern coastal regions of England. Cloud thickens over northwestern areas throughout the day and a band of rain, sleet and snow works its way inland over northwest Scotland later. Winds pick up here too. High temperatures of -1 to 4C for most.