The Met Office has said there could be more snow over high ground in the UK in the coming days.
Most of the UK will wake up on Wednesday to below freezing temperatures, the Met Office said.
It will drop as low as -4C in some parts of the country in the morning, but the afternoon will see a remarkable turnaround, with highs of 12C.
This massive 16C nationwide change in temperature in the space of half a day comes as the Met Office forecasts snow on high ground from the weekend and into next week.
In the south west of England, the forecaster is predicting a minimum temperature of -3C on Wednesday morning, followed by a maximum of 12C in the afternoon.
Temperatures in the Midlands and in Scotland will drop as low as -4C at about 5am on Wednesday, the Met Office said, but Thursday and Friday will bring milder weather.
Meanwhile, in its long-range forecast looking at the end of the month, it said that snow is expected, but that it will most likely be isolated to high ground in the north of the country.
Looking at Saturday 29 November to Monday 8 December, the Met Office said: "Changeable and unsettled conditions are expected across the UK during this period.
"Low pressure systems will tend to dominate meaning showers or longer spells of rain for much of the UK. Some heavy rain or showers are expected, most often in the west, although with a risk some of this could spread to other areas at times. Snow will probably be confined to high ground in the north."
While there may be snow in high regions, temperatures will be around average or slightly above.
The Met Office previously played down reports that a large flurry of snow is forecast to hit the UK at the end of this month.
Citing data from online forecast compiler WXCharts, The Mirror reported that snow could fall on cities such as Birmingham, Manchester, Bristol and Leeds on Sunday 30 November.
However, the Met Office told Yahoo News UK: "Different simulations produce different pictures of the weather forecast and one-off, single charts do not provide the broader forecasting picture.
"The actual forecast is developed using a mix of hundreds of computer model simulations. Our expert forecasters are aware of the intricacies of different weather simulations and, crucially, know which ones to refer to and when."
The Met Office issued a series of yellow weather warnings last week as much of the UK was covered in snow, with November's lowest temperature in 15 years of -12.6C recorded in Tomintoul in Moray, Scotland.
Why is it tricky to forecast snow accurately?
The Met Office said forecasters examine three factors when predicting snow - where the air has come from, very heavy precipitation, and when warm air meets cold air.
Because of this range of indicators, it says predicting snow in the UK "can be one of the trickier forecasts to do accurately".
The Met Office said: "Because of the UK's location, where the air comes from is incredibly important when it comes to determining if snow is possible.
"Being surrounded by water also adds another factor into predicting snow chances in the UK, it may not feel like it if you dip your toe in, but the water in the seas around the UK is well above freezing and that affects the temperature of the air close to the surface, which can determine how much snow is in the forecast."
Because of the need for all three factors to align, the Met Office needs a significant amount of data, which means it can only really predict snow a few days in the future.
This is because even if they're sure on two of the three factors happening a week in advance, one could still be uncertain and without all three the chance of snow would still be effectively unknown.
Yahoo breaks down what the weather will be like in the coming days for each region of the UK, according to the Met Office.
London and the South East
Bright spells and variable amounts of cloud, but widely dry through the day with just the chance of a light shower in the north and east. Still feeling rather chilly, though winds a little lighter than on Monday. Maximum temperature 7°C.
Remaining dry and becoming increasingly clear overnight with temperatures falling quickly into the evening as winds ease, with a widespread frost developing. Minimum temperature -1 °C.
A largely fine day Wednesday. Mostly clear and frosty to start. Breezier and gradually milder by the evening with spells of light rain possible. Maximum temperature 7°C.
Breezier and remaining much milder through Thursday and Friday with spells of rain. Winds easing into Saturday but remaining unsettled and forecast confidence reduces.
South West
A chilly start with variable amounts of cloud, mainly in the east and sunny spells through the day. A few showers still persisting across parts of Cornwall. Winds gradually easing. Maximum temperature 9°C.
Temperatures quickly falling away this evening underneath the clear skies and light winds, with any showers easing. Turning cloudier in the far west by dawn, elsewhere cold with a frost. Minimum temperature -3°C.
A cold and bright start to Wednesday for most, but cloud soon building from the west with outbreaks of rain arriving by late afternoon. Turning breezy and milder in the west. Maximum temperature 12°C.
Turning much milder and windier on Thursday further spells of rain. Remaining changeable towards the weekend with showers or longer spells of rain. Temperatures returning back to average.
Midlands
A chilly start with variable amounts of cloud, though cloud melting away into the afternoon to give way to more sunny spells. Still feeling cold, but lighter winds than Monday. Maximum temperature 7°C.
Temperatures quickly falling away this evening underneath the clear skies and light winds. Dry overnight with some mist and fog patches, and turning very cold with a sharp frost. Minimum temperature -4°C.
A cold, frosty and bright start to Wednesday. Cloud gradually building from the west with outbreaks of rain arriving into the evening accompanied by a strengthening wind. Maximum temperature 8°C.
Turning much milder and windier on Thursday further spells of rain. Remaining changeable towards the weekend with showers or longer spells of rain. Temperatures returning back to average.
North East
Scattered showers and bright spells through much of the day. Showers heavy at times with hail and some sleet over higher ground, but becoming increasingly confined to coastal fringes through the day as winds ease and skies clear. Feeling cold. Maximum temperature 6°C.
Becoming dry, cold and increasingly clear overnight with a widespread frost developing. Cloud thickening from the west into the morning. Minimum temperature -1°C.
Cloud and patchy rain spreads east on Wednesday after a frosty start. Breezier and milder by the late afternoon and evening with spells of light rain. Maximum temperature 7°C.
Breezier and remaining much milder through Thursday and Friday with spells of rain. Winds easing into Saturday and likely turning drier but forecast confidence reduces.
North West
A cold and bright start for most, with cloud mainly in the east of the region. A dry day with plenty of autumnal sunshine into the afternoon. Still feeling cold though lighter winds than Monday. Maximum temperature 7°C.
Temperatures quickly falling away this evening underneath the clear skies. Some cloud gradually building in from the west by dawn, otherwise a cold night with a sharp frost forming. Minimum temperature -3°C.
After a cold, frosty but dry start to Wednesday, it'll turn cloudier from the west with outbreaks of rain pushing in by the afternoon accompanied by a brisker breeze. Maximum temperature 9°C.
Turning much milder and windier on Thursday further spells of rain. Remaining changeable towards the weekend with showers or longer spells of rain. Temperatures returning back to average.
Scotland
It will be dry and bright with good spells of sunshine, aside from some cloud and perhaps the odd shower towards northern Angus at first. Feeling colder than Monday. Maximum temperature 6°C.
It will be dry with largely clear skies through the evening allowing a widespread frost to form. Staying dry overnight but cloud spreading east towards morning. Minimum temperature -4°C.
A dry but cloudy start to Wednesday, with outbreaks of rain spreading east through the morning. Staying cloudy and mostly dry in the afternoon with the odd spot of drizzle. Feeling milder. Maximum temperature 8°C.
Cloudy and turning milder on Thursday, staying mostly dry in east with some rain in west. Mostly dry on Friday and Saturday, chance of some showers. Breezy Thursday and Friday.
Northern Ireland
It will be dry and bright with good spells of sunshine, aside from some cloud and perhaps the odd shower towards Down and Antrim at first. Feeling colder than Monday. Maximum temperature 8°C.
It will be dry with largely clear skies through the evening allowing some fog or early frost to form. Cloud and outbreaks of rain spread east to all parts overnight. Minimum temperature 0°C.
Cloudy and windy on Wednesday as rain spreads east through the morning, heavy at times. Staying cloudy in the afternoon with patchy light drizzle, but winds easing. Milder than recent days. Maximum temperature 10°C.
Cloudy and mild on Thursday with rain, heavy at times. Bright spells and showers on Friday and Saturday, heavy at times. Strong winds on Thursday and Friday.
Wales
A chilly start with a touch of frost in places. Plenty of autumnal sunshine through the day with showers in the west mostly easing into the evening. Winds turning lighter too. Maximum temperature 9°C.
Temperatures quickly falling away this evening underneath the clear skies and light winds, with any showers easing. Turning cloudier in the far west by dawn, elsewhere cold with a frost. Minimum temperature -4°C.
A cold and bright start for most on Wednesday, but cloud soon building from the west with outbreaks of rain arriving by late afternoon. Turning breezy and milder in the west. Maximum temperature 11°C.
Turning much milder and windier on Thursday further spells of rain. Remaining changeable towards the weekend with showers or longer spells of rain. Temperatures returning back to average.