The beginning of British summer time will be marked by freezing temperatures and April showers, the Met Office has forecast.
Temperatures could fall as low as -5C, with many areas feeling colder than recent days.
Met Office forecaster Craig Snell said some places will see frost at night, while mountainous areas of Scotland may see snow.
“It’s really a week of April showers, a mix of rain and some snow on the high ground and some hail,” he said.
“It’s going to be a very different week to the week just gone.”
Mr Snell said remote areas of Scotland and Wales could see temperatures fall to as low as -5C at night, while temperatures in other areas will hover around freezing.
Daytime temperatures are expected to be around 10 – 12C in the south and around 8 – 9C in the north.
Monday will see a dry and bright day in the south and east of the UK, which will contrast wet and windy weather in the northwest.
Northern England and Wales will see rain overnight, with a few showers affecting the far southeast of the country as well.
Once the rain clears on Tuesday it will leave a colder, breezier feel across the UK, the Met Office said, with sunshine and April showers to follow.
The rest of the week will see showers or longer spells of rain, along with strong winds at times.
“It will be generally colder than of late, with overnight frost for many,” the Met Office forecast said.
