Temperatures are expected to drop in eastern England from Thursday, with the mercury “scratching into double digits”, Mr Burkhill said.
However, temperatures are expected to stay around the teens and twenties in parts of central and western England and Wales.
Rainy weather is forecast for Easter Sunday, with a risk of sleet or snow in Scotland and the far north of England.
Wales recorded its hottest day of the year so far on Tuesday, with temperatures reaching 21.3 ° C (70 ° F) in Cardiff.
Northern Ireland also had its hottest day of the year with temperatures reaching 18 ° C (64.4 ° F) at Giant’s Causeway, while Scotland saw the mercury rise to 18.5 ° C (65.3 ° F) at Lossiemouth, Moray.