Northern Ireland weather: Widespread frost forecast with first snow of season likely, says Met Office
Northern Ireland will suffer a widespread frost tonight - with overnight ice likely for the rest of the week and snow expected on higher ground.
The Met Office spokesman says this week will feel chilly or cold across Northern Ireland, which will be particularly notable after a very mild first two weeks of November.
It said the UK as a whole is heading towards a cold snap this week, bringing with it a chance of snow.
The forecast comes as a major incident declaration remains in a Welsh town after severe flooding inundated properties, causing disruption to transport and power networks.
People were rescued from their homes in Monmouth after overnight floods on Saturday left much of the town under water. Some had to be evacuated to a nearby library.
Four severe flood warnings are still in place for south-east Wales, meaning there is a "danger to life" in those areas.
In Portugal, an 85-year-old British woman died after Storm Claudia hit a holiday campsite in the Algarve.
Meanwhile, Met Office Meteorologist Tom Morgan told the News Letter that Northern Ireland will turn cold from Sunday night into Monday morning with "a widespread frost and lows of minus 3 Celsius".
His forecast applies across all parts of Northern Ireland, he said.
Overnight temperatures into Monday morning will fall to minus 5 Celsius in rural spots.
The coldest nights this week in NI are set to be Wednesday and Thursday.
"Overnight icy stretches are likely this week where we see late showers with Tuesday night and Wednesday nights looking most likely to see ice on untreated surfaces.
"Met Office warnings for ice are quite likely in the week ahead but this is always under review.
"Snow is likely over the hills at times, especially on Wednesday, with perhaps over 5cm over the highest ground. Amounts at lower levels are uncertain but some areas could see a few cm, especially on Wednesday."
While Northern Ireland is still technically in Autumn, he said, this week will be much colder and the coldest spell of the season so far, although fairly typical for the time of year.
"Temperatures are likely to fluctuate in the coming weeks from above average to below with further cold spells possible into December," he added.