While the record for the hottest Bank Holiday Monday was set in 1999, the hottest bank holiday weekend ever was in 1995 when temperatures peaked on the Saturday at 28.6C (83.5F).
Met Office forecaster Mark Wilson said: 'It is likely to be the warmest early May Bank Holiday Monday since the first in 1978, beating the 74.5F (23.6C) record.
There will be a drop off in temperature as the week goes on, though the warmth is expected to return midway through the following week.
On Monday, temperatures are expected to hit 27C across some parts of the UK.
SCOTS reached for bottles of Factor 50 yesterday - with today predicted to become a Bank Holiday sun-day.
"But whether or not we will beat the record for the whole weekend put together, we'll be close, but at the moment looking at it we may just come short".
He said: 'It should be a relatively easy journey in terms of the impacts from weather'.
"Most of the United Kingdom will be dry throughout the weekend, with an increasing amount of sunshine. Cloudier over Northern Ireland and Scotland with some patchy light rain at times".
Traffic spokesman Rod Dennis said: "Many people will still be keen to make the most of the early May warmth by escaping in the vehicle to spend time with family or friends especially after the recent chilly spell that even lead to some overnight frosts at the start of this week".
Exacta Weather's James Madden said there could even be a chance the mercury could reach the 30C mark.
Scots managed to enjoy some well-deserved sun as temperatures soared over the bank holiday weekend.
Hampshire, Worcester and Malden set the record that year, when temperatures reached 23.6C. "This is most likely to happen in the south".
The record highest temperature for May is 32.8C which was recorded in 1922 and 1944.
Bookmaker Coral has cut the odds on this month seeing the hottest May day ever recorded to 6-4 from 2-1.