Rain will hit most of the UK at some point as the north/south weather divide continues with some places set for highs of 26C on a muggy Wednesday.
Scotland, Northern Ireland and Wales will struggle to hit the 20C marker as wet weather sweeps across the nation throughout the day, but the southeast coast will ramp up the temperature once more with a peak of 25C or 26C.
Wednesday's forecast may be cooler compared to recent weeks but 2023 is set to be on track to be the hottest month of June since records began in 1884.
It is provisionally set to overtake the previous June record set in 1940 in addition to the famed summer of 1976, which is second on the list as it stands.
The Met Office's Mike Kendon said: "With only a few days of near-average temperatures forecast for the remainder of the month, overall this June will turn out to be provisionally the hottest June on record for the UK for both mean and average maximum temperature.
"Meteorologically, June started with high pressure over the UK bringing often settled and dry conditions with plenty of sunshine. Once that high pressure subsided, warm, humid air took charge over the UK, with 32.2C the highest temperature recorded so far this month and high temperatures for the vast majority of the UK.
"What has been particularly unusual is the persistent warmth for much of the month, with temperatures reaching 25C widely for at least a fortnight, and at times 28 to 30C – whereas we would more typically expect maximum temperatures in the high teens or low 20s at this time of year."
As for Wednesday, it will be a cloudy start for most of the UK with eastern Scotland experiencing the clearest of conditions to begin the day.
Rain will sweep across western Northern Ireland and Wales, which will filter its way across to northwest Scotland and northern England with heavy downpours and the threat of thunder.
However, there will be another northwest/southeast divide when it comes to the temperature with Scotland, Northern Ireland and Wales in the high teens, peaking at 19C; while the southeast coast could see the mercury rise to 26C.
A weather front will work across the southeast as we head into Wednesday evening with some wet weather to come albeit sporadically. Cloud cover will ensure it will be another muggy night for much of the country with temperatures, across the board, in the mid teens.
UK 5 day weather forecast
This Evening and Tonight:
Staying mostly cloudy tonight, with outbreaks of light rain and drizzle in places, although turning somewhat clearer across Scotland. Some heavier rain arriving across Northern Ireland towards dawn. A warm and muggy night to come for most.
Wednesday:
Rain, heavy at times, will move eastwards, although remaining largely dry across southeastern areas. A cloudy day for most but turning brighter and fresher behind the rainband with scattered showers.
Outlook for Thursday to Saturday:
Rain clearing southeast on Thursday, then largely dry but feeling fresher. More changeable for Friday and Saturday, with outbreaks of rain and brisk winds but with some sunshine in between.
