Temperatures plummeted to -10C (13F) in some parts of Scotland as the country experienced one of the coldest nights of winter yet.
The chilliest temperatures were -11 (12.2F) at Tulloch Bridge in the Highlands and Braemar in Aberdeenshire not far behind with -10.1C (13.8F).
It was slightly milder in Aviemore in the Highlands where the lowest temperature recorded was -7C (19.4F).
Airports in the country also recorded low temperatures with Glasgow reaching a low of -8C (17.6F) and Edinburgh a low of -6C (21.2F).
STV weatherman Sean Batty said Tuesday was likely to be a cold, crisp winter's day with some sunny spells.
He added that temperatures were expected to be cold again overnight.
He said: "We are looking to have similar temperatures on Tuesday night across Scotland and especially in some of the Highland glens. Looking forward into the week it's likely to be milder but also windy and wet.
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