She said: “Monday and Tuesday should be very warm with temperatures throughout the UK lifting, 31C is possible.”
The latest forecast on Netweather added temperatures will rocket after a weekend of rain in central and eastern regions.
It said: “The weekend is looking mixed. Through Saturday a band of cloud pushes down across southern and central regions.
“It could bring a few spots of rain but brighter conditions follow it. In northern and western Scotland spells of rain are likely.
“On Sunday patchy rain is possible in the north west. Other areas remain dry.
“It will be warmer than recently with temperatures in southern and central regions pushing up into the mid 20Cs
“Early next week temperatures continue to rise across England.
“In central and eastern counties 30C (86F) could be reached.”
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“The northern half of the UK keeps the blustery westerly winds with a scattering of heavy, even thundery showers affecting the north of Northern Ireland and western Scotland including Glasgow.
“Later in the day, the Atlantic front begins to head in, bringing heavy rain and strengthening winds, backing as it arrives for Northern Ireland and western Scotland.
“Also windy through the Irish Sea on Saturday night.”
The Met Office has also issued two yellow warnings for rain over the weekend in western Scotland.
The warnings will last from 6pm on Saturday to midnight on Sunday and affect areas including Fort William.
The Met Office said: “A band of heavy and persistent rain will arrive across western Scotland during Saturday evening, and continue through much of Sunday.
“Many places in the highlighted region will see 25-50 mm of rainfall.
“However, over the hills and mountains, peak totals of 120-160 mm are likely during this time.
“In association with the rainfall, there will be a period of strong southwesterly winds.
“These are not expected to be overly impactful, they may make travelling conditions more challenging in places.”