Elderly people with vaccine appointments have been warned not to brave dangerous conditions caused by snow showers.
Age UK has urged people to look out for elderly relatives as Tuesday night is expected to be the coldest of the winter, with lows of minus 18C forecast in the Scottish Highlands.
This follows the record set overnight on Monday, when minus 16.7C was recorded in the region.
Director of Age UK Caroline Abrahams has warned elderly people with vaccine appointments not to attempt travelling through treacherous conditions.
She said: “Rather than battling the elements and putting health at risk, it would be better to call your GP to see what the alternative vaccination arrangements are being made locally.
“It’s important to remember that Covid-19 vaccination is not a one-off opportunity, if for any reason you can’t take the first appointment you’re offered there will be other opportunities later on, possibly in a range of nearby settings.”
Cold temperatures increase blood pressure, which can trigger heart attacks and strokes in elderly people, and breathing in chilly air can increase the impact of illnesses like flu and pneumonia.
The charity’s advice for those heading out on essential journeys includes planning ahead to avoid dangerous routes, wrapping up warm, and helping grandparents with shopping so they can stay indoors.