Snow could fall across Wales this week, the Met Office has said.
The Met Office said the country will become colder, cloudier and more unsettled from Monday, bringing the risk of wintry weather in the middle of the week.
Temperatures during the day will halve from the highs reached last week and fall below freezing overnight as a cold front pushes down from the north.
It comes after many areas basked in glorious sunshine and highs of 20C last week.
Wednesday is the most likely day to see snow in Wales, with the Met Office forecast for Tuesday to Thursday saying: “Cloud becoming more widespread through the week with an increased chance of showers or rain, perhaps even some snow in places.
“Windier by Thursday and feeling colder as temperatures drop.”
Alex Burkill, a Met Office forecaster, told the PA news agency: “Wednesday will be the most extreme in terms of wintry weather, as a cold stream of air will start to push southwards bringing unpredictable wet and windy conditions, even snow or sleet.
“It will be markedly colder than what we’ve just seen, daytime temperatures falling by half, and some areas will even struggle to hit 8C (46.4F), which will signify the biggest change in conditions.
“Overnight into Thursday and Friday, many areas will fall considerably lower than freezing, towards minus 4C (24.8F) and minus 5C (23F)
“It looks like most places will be impacted, parts of northern England, northern Wales and central England are expected to be the worst affected.
“This wintry weather could even push into southern areas of England and Wales, which isn’t unusual, it is normal to have colder weather in April, but it’s far from the sunny, warm days seen last week.”
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