The Met Office has said that the warmer weather will be a “short-lived interlude” and then conditions will change for the weekend.
On Thursday the mercury is set to hit 28C in parts of the UK but more widely temperatures will be in the mid 20s.
Stephen Dixon, from the Met Office, told the PA news agency, “What much of the UK is getting tomorrow is a short-lived warmer period of weather.
“There’s at least a little flavour of the more traditional summer weather.
“Temperatures tomorrow could reach as high as 28C in some isolated spots but more widely … mid 20s in some areas and even fairly far north you could get temperatures into the mid 20s.”
The weekend will present a “familiar pattern” with a “mixture of showery conditions and an unsettled period of weather for the UK.”
Dixon added, “And unfortunately for some, if you’re not a fan of this kind of weather, the outlook for next week really is for this unsettled picture to continue with a continuation of this showery regime with a mixture of sunny spells and showers looking likely through much of next week.
Asked about expectations for the rest of the month, he said, “There is still that signal for that mixture of rain and showers through to the end of August, but you could see some more settled interludes in between.”