Forecasters are predicting that temperatures this week will beat any other May day since 2012.
High pressure and warmer air from the south means that the UK will warm temperatures this week.
Merseyside saw heavy rain during the last week, but the rain is due to give way to drier and warmer weather.
Merseyside is at risk on Saturday as heavy rain is predicted, these heavy showers could contain thunder at times.
With the clash of warm air and cool air comes a risk of thunderstorms. So will Merseyside see any ?.
Merseyside is expected to see rain throughout most of the week.
After a warm sunny week on Merseyside, the weather is set to change for the worst through the weekend.
Merseyside basked in gorgeous sunshine this week, which has resulted in warm temperatures.
Lack of rain during Autumn, winter and early spring has meant that river and reservoir levels are lower than usual in parts of the UK.
Merseyside will see more warm weather this week as temperatures are set to reach the high teens.