A few very isolated afternoon showers are possible with a maximum temperature of 22C.
Scattered thundery showers become more widespread for the afternoon, with torrential downpours in western areas with risk of hail.
Tonight, dry with clear spells initially.
Occasional showers will develop by this afternoon with these increasingly heavy, with a maximum temperature of 18C.
Bright and breezy Friday, although rain possible by evening.
Dry to start but cloud will build from the west tonight.
It should remain dry across London and the south east overnight with light winds and some good clear spells.
Expect it to remain fine and mainly dry with variable amounts of cloud and some decent sunny spells.
Parts of the capital were left under water as storms swept across the south.
Dry and bright with sunny spells on Thursday, small chance of a few showers.