Temperatures in Northampton will reach double figures at the weekend with warm weather and sunshine predicted.
The UK could enjoy its warmest weekend of the year with temperatures soaring to 17C (63F) in eastern Scotland and 15C (59F) in London.
A Met Office spokesman predicted a “marked change” on Saturday as spring finally gets under way after a chilly week.
In Northampton temperatures will reach 12C on Saturday by around 3pm.
The Met Office predicts that Saturday in Northamptonshire will be windy, mild but largely dry with some sunshine.
Sunday’s temperatures across the county will be 10C with some sunshine throughout the day.
The Met Office’s Simon Partridge said: “We are going to have some milder conditions and there will be a marked change with spring temperatures from Saturday.
“We have been there already but not for a while. The most recent highest temperature was at Exeter Airport. It was 16.5C (62F) on the ninth of January.
“The mild weather is coming in the from the South West, which originated in the Caribbean area and across the Atlantic.
“It’s going to be a marked change and people will feel the difference. In some parts of the country people are going to be having a very pleasant day compared to the weather in the last few weeks.”