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THE longest heatwave for 42 years will come to halt today - but won't be gone for long.

The nation enjoyed one last scorcher yesterday with temperatures soaring to 89F (31.5C) in Gravesend, Kent.

 Sunseekers were spotted in Bournemouth on Monday
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Sunseekers were spotted in Bournemouth on MondayCredit: Alamy Live News
 But torrential rain which caught commuters in London by surprise last week is set to return
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But torrential rain which caught commuters in London by surprise last week is set to returnCredit: WENN

The thermometer is set to drop to 77F (25C) today with scattered showers expected to drench scorched lawns.

But the heatwave will be back by Friday with up to 86F (30C) expected across the south and south east.

Met Office forecaster Mark Wilson said: "We're going to see cooler temperatures and some heavy rain arrive today.

"Temperatures will be back down to where they should be for this time of year which means the heatwave is at an end - but it'll be back.

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 Rain and cooler weather is expected across the country over the next few days
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Rain and cooler weather is expected across the country over the next few days
 There was more cloud visible over the skies of London on Monday as the capital and rest of the country prepares for cooler weather
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There was more cloud visible over the skies of London on Monday as the capital and rest of the country prepares for cooler weatherCredit: Alamy Live News
 These beachgoers made the most of a warm and dry morning in Littlehampton on Monday as rain is expected in some parts of the country this week
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These beachgoers made the most of a warm and dry morning in Littlehampton on Monday as rain is expected in some parts of the country this weekCredit: Alamy Live News
 People flocked to the beach in Brighton on Sunday
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People flocked to the beach in Brighton on SundayCredit: Alamy Live News
 Thousands of people flocked to Margate to enjoy the sunshine over the weekend
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Thousands of people flocked to Margate to enjoy the sunshine over the weekend
 Londoners enjoyed the heatwave on Sunday which is set to end this week
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Londoners enjoyed the heatwave on Sunday which is set to end this weekCredit: SWNS:South West News Service
 A couple enjoyed the sunshine in Poole this weekend
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A couple enjoyed the sunshine in Poole this weekendCredit: Alamy Live News
 People sunbathed on the beach at Weston-super-Mare in Somerset on Sunday
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People sunbathed on the beach at Weston-super-Mare in Somerset on SundayCredit: PA:Press Association

"We'll see temperatures slowly creeping back up over the next few days before a possible 86F (30C) by the weekend.

"It's going to pick right back up where it left us."

The heatwave, the longest since 1976, began on June 24 and saw 16 consecutive days where temperatures were over 82F (28C).

It also saw the hottest day of the year so far with 91.4F (33C) set at Porthmadog in Wales on June 28.

 Sunday was another hot day with temperatures into the 30s
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Sunday was another hot day with temperatures into the 30sCredit: London News Pictures
 Rain will be welcomed in areas such as the 'tinder-dry' Wanstead Flats in London where firefighters were still battling the fire on Monday
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Rain will be welcomed in areas such as the 'tinder-dry' Wanstead Flats in London where firefighters were still battling the fire on MondayCredit: PA:Press Association

And forecasters reckon the warm weather could remain until the end of the month at the very least.

Mr Wilson added: "Most places look like they'll stay warm and hot through to the end of July - particularly in London and the South East."

If it does this month could be among the hottest July's on record.

Last month Brits enjoyed the nation's second hottest June ever. Only June 1940 was hotter, the Met Office said.

TWO-DAY FORECAST

TODAY: High: 77F (25C) Overnight: 50F (10C) Sunshine and showers

WEDNESDAY: High: 75F (24C) Overnight: 50F (10C) Sunshine and showers

The average day-time maximum temperature was 68F (19.9C) - the same as it was during the drought of 1976.

The crisis was so bad the government appointed a drought minister and rationed water.

The current heatwave has seen reservoirs run dry and water firms plead with customers to cut back on their usage.

Keith Lemon takes over L​aura Tobin​'s weather forecast on​ ​Good Morning Britain