Saturday will be a much drier, brighter day with sunny spells after early mist or fog patches, says the Met Office.
Isolated showers are possible later, especially in the west of the county. Temperatures could reach 22C, with lows of 14C at night.
For Sunday, some heavy rain or showers are likely, and it could get windy for a time. It will feel cooler, with highs of 17C.
For the start of next week, it will be breezy with sunny spells and heavy showers.