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Forecasters say there is also a chance that this week's heatwave could beat the all-time temperature record for July, which is 36.7°C, as some areas get set for potential highs of 37°C later in the week - with stifling humidity also threatening to make it feel closer to 44°C.
Some exceptionally high temperatures :thermometer:️ are likely this week but how #hot will it get? #HeatwaveUK pic.twitter.com/i5woXICUez
- Met Office (@metoffice) July 22, 2019
Met Office meteorologist Sophie Yeomans said: "The hot weather is coming up originally from Africa and through France and Spain which are going to see heatwave conditions again this week.
"By Wednesday we expect temperatures in the UK to reach 93°F (34°C) during the second half of the week it is uncertain whether there will be a trend back to fresher conditions.
"If the heat remains temperatures could rise slightly higher.
"During the first part of the week while high pressure builds over southern Britain, it will be a slightly different picture across the northwest which is still stuck in the jet stream. Low pressure will come into the north and there will be a fair amount of rain."
Experts are warning people to take care as things heat up, with particular concern for the elderly.
Malcolm Booth, chief executive of the National Federation of Occupational Pensioners (NFOP), advised: "Weather forecasts predict another spell of very hot weather on the way and it is important to remember that this can be as dangerous as cold in the winter.
"People should prepare for this in order to prevent a spike in excess summer deaths due to the heat.
"Stay indoors during the hottest periods and if you live close to people who might be struggling in the hot weather take a minute to check if they are alright.
"With very high humidity this can affect elderly people and those with breathing problems more severely.
"Keeping curtains closed to keep the sunlight out during the hottest part of the day can also help keep temperatures down."
While forecasters predict daytime temperatures to reach the mid-30s this week, Netweather charts show high humidity could make temperatures 'feel like' 44°C in some areas, as sweltering humidity pushes north from the continent.
Chris England, a Sky News weather producer, also said nighttime temperatures for July could be beaten, explaining: "We are likely to see night-time temperatures staying above the record July minimum of 23.3°C (74°F) set at St James's Park in 1948 and possibly the all-time record of 23.9°C (75°F) set in Brighton on the 4 August 1990.
"Daytime temperatures could well go over the July maximum of 36.7°C (98°F) set at Heathrow in 2015 as well, with Thursday being the hottest day.
"There's just a small chance that the all time record of 38.5°C (101°F) set at Faversham in August 2003 could be broken."
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