Britain will ward off winter for a few weeks yet as a weather anomaly is set to bring 10 days of warm sunshine as temperatures soar.
A 700-mile wide band of subtropical air is set to sweep in from the Azores, bringing balmy weather up to 6C above the average for the time of year.
Saturday saw the mercury rocket up to 19C in parts of England, where people are once again confined to their homes for lockdown.
Weekend temperatures surpassed Marseille, France, and the warm spell could last beyond the end of the week, say forecasters.
The highest temperature ever recorded this late in the year was 22.4C on November 1, 2015, in Ceredigion, Wales.
The Met Office said the “particularly mild” conditions would last past the middle of the month.
Forecaster Marco Petagna said: “Is it really autumn? An established southerly airstream could see 17C ahead in bright spells, with the East drier and West having some rain.”
Weather Outlook’s Brian Gaze added: “It’s notably warm, with 18C feeling like an Indian summer after frosts and snow.
“But computer models suggest colder weather from late November.”
However, some charts suggest Britain could see even colder temperatures than average by December.
BBC forecaster Matt Taylor said Monday will start with showers thanks to a “kink in the isobar”, which will begin pushing across the southwest of England, Wales and Northern Ireland, and then move north and eastwards.
He said last week’s widespread frost will not likely be seen for around 7-10 days, though the second half of the week will see the wind change, bringing in further rain and a drop in temperatures.
Mr Taylor went on to say heavy, thundery showers in the southeast corner of England could strike tomorrow with a deep area of low pressure moving towards Iceland and bringing heavier rain for Wednesday.
The change in pressure could see severe gale force winds towards Wales, with a “wet and windy” night into Thursday morning.
UK 5 day weather forecast
Fog and low cloud, slow to lift in places. Showery rain almost anywhere, probably heaviest in southwest England and south Wales this afternoon. A few bright or sunny spells, notably in northern Scotland. Mild, indeed very mild where it brightens.
Showery rain, with heavy bursts in places but perhaps less widely later. Areas of low cloud and fog patches. Mild for most, but chilly in the far north where clearer.
Still a scattering of showers, but more in the way of dry weather generally. Cloud and mist should gradually thin to give some sunshine in places. Mild.
Outlook for Wednesday to Friday:
Unsettled with spells of rain, heaviest and most prolonged in the west, but also some dry and bright spells. Windier than recently and feeling a little cooler.