Temperatures will plummet to a bitterly cold 0C in the Scottish Highlands during the last week of October, according to WXCHARTS. The maps show freezing air swirling over the UK in a westerly direction. Most other regions in the UK, including Newcastle and Coventry, will also shiver as the low temperatures stay in single figures of 2C.
Brian Gaze at Weather Outlook warned of an “early taste of winter” being possible during November, with the risk of snow falling in northern parts of England and Scotland.
He said: “There are some indications of colder than average periods occurring more frequently during the second half of the meteorological autumn than the average.
“Of course that doesn’t mean we’ll see snow but it increases the risk, particularly in the north.”
Mr Gaze added a La Nina pattern will develop over the tropical Pacific as the sea surface temperature cools by the end of October.
This will likely result in increased rain and show showers, as well as bitter lows.
He said: “The La Nina weather pattern which is currently occurring is thought to increase the chance of cold weather in northwestern Europe during the late autumn and early part of the winter.
“During a La Nina event the sea surface temperature across the equatorial Eastern Central Pacific Ocean will be lower than normal by 3 to 5C.”
The Met Office’s long-range forecast between Saturday, October 24 and Saturday, November 7, also predicted below average temperatures and wintry weather.
The forecast said: “Confidence becomes low towards the end of the month. However, the early part of the forecast period will likely see a gradual transition from the longer settled spells being in north and northwest with more prevalent rain and showers in the south, to a generally more unsettled pattern across the UK.
“Rain and showers may turn wintry over high ground in the north and northwest, whilst there will also be the odd brief settled spell at times during this period.
“Temperatures likely to stay at or just below average throughout.”
Jo Farrow at Netweather also warned of a new Atlantic low pressure system pushing towards the UK at the start of next week.
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She said: “A cold start on Sunday but fine with super autumn sunshine.
“There is some uncertainty for East Anglia, maybe Lincolnshire and East Yorkshire with a band of cloud and showery rain lurking nearby over the North Sea.
“It could plague eastern England on Sunday and bring quite a different day.
“The cloud fills in during Sunday, but it stays fair and bright still with a cool breeze.
“Nippy again on Sunday night but an Atlantic low looks to move in for Monday bringing rain from the west, blustery winds but also milder air briefly.
“The chill will be back by Tuesday as the winds swing round to the north.”
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