Temperatures soared to almost 20C today as the country basked in an Indian summer.
The warm October weather could make 2014 one of the hottest years on record and weather forecasters have predicted the sun is here to stay.
The mercury hit 19.7C in Santon Downham, Norfolk, which was the warmest place in the UK, while Kew Gardens in south-west London enjoyed temperatures of 19.6C.
The sunny spell was around six degrees warmer than average for October, while elsewhere in the UK temperatures were at least three or four degrees higher than normal.
Tomorrow the warm spell is set to continue and temperatures could reach 20C in central England before they start to cool again.
Rachel Vince, a forecaster for MeteoGroup, said: "In terms of temperature it's going to be average or above average throughout November.
"The actual weather will be unsettled. It's typical autumnal weather which will be windy and rainy at times with some warm spells as well. Changeable is the best way to describe it."
She added: "Tomorrow will be much the same again. If the sun is out, there is the potential for it to creep up to 20C in central England.
"The cold will start to move in over the next few days to western and northern parts which will bring temperatures down, especially in the North and Scotland, which will feel much colder as temperatures drop down to about 10C.
"The UK has been mild for much of the month and 2014 could turn out to be one of the hottest years on record. Temperatures have often been above the norm."