The Met Office has issued four yellow weather warnings for ‘dangerous’ snow and ice in parts of the country overnight.
The warning is in place from midnight tonight until 10am tomorrow.
People are being warned of potential travel disruption, as well as injuries from slips and falls on icy surfaces.
In Scotland, residents are being told to brace for snow, while showers will turn increasingly wintry overnight.
Icy patches are also expected to bring some disruption.
The Met Office said: “Falling snow will reach low levels away from the western coastal fringes by dawn.
“Some spots may see accumulations of 1-3 cm below 150 m, with more widely 5-10 cm above 150 m and 15 cm above 300 m.”
It added: “Strong winds may also bring temporary blizzard conditions in association with the showers.”
And in North East England, the warning reads: “Following rain on Sunday afternoon surfaces are expected to remain wet into the evening when temperatures will start to fall.
“With surface temperatures falling below freezing some icy stretches are likely to form, mainly on rural routes and untreated surfaces.
“Some further rain overnight may bring an increased risk of icy stretches for Monday morning.”
In Northern Ireland there will also be a “fragmenting band of rain and hill snow will cross from the west during Sunday evening”.
Temperatures are set to drop overnight and icy patches will develop.
Meanwhile, conditions will continue to be unsettled later on in the week with spells of rain and strong winds, and possible gales.
There could also be some brighter and colder periods at times, with some lighter showers.
Any snow during the period will be confined to the northerly hills.
Temperatures will fluctuate from mild to cold.
Five-day weather forecast
Rain and fresh to strong winds moving southeastwards across the UK, followed by some bright or sunny spells across western areas during the afternoon. Wintry showers developing across northwest Scotland. Becoming colder from the northwest.
Blustery showers for northern and westerns UK and turning wintry in the northwest with some snow over high ground. Risk of icy stretches by dawn for Northern Ireland and Scotland.
Sunny spells and scattered showers, these wintry in the north, and perhaps merging into a longer spell of rain later. Feeling cold in the brisk southwesterly winds.
Outlook for Tuesday to Thursday
Windy and cold on Tuesday with a mix of sunny intervals and wintry showers. Turning milder for Wednesday and Thursday with rain in the north and west.