Low pressure is now dominating and a band of rain moving northeastwards will be covering the southern half of Wales by around 7pm, causing some heavy downpours.
This band of rain will continue to push into northern and eastern counties by around midnight, leaving showers in its wake elsewhere.
Temperatures throughout the country are expected to stay in double figures tonight.
The Met Office has issued a Yellow warning for heavy rain which is valid from 4am through until 9pm on Saturday night.
There will be widespread showers throughout the course of tomorrow morning, turning heavier and possibly thundery into the afternoon.
There is expected to be some brighter spells from time to time and temperatures will remain in the mid to high teens.
Showers will continue throughout the course of Friday evening.
Saturday remains unsettled with some fairly heavy downpours but it will begin to clear from the north in the afternoon.
Sunday is expected to be a drier and brighter day and high pressure looking likely to build once again as we head into the new working week.