There will be blustery showers around the fringes of Scotland which will continue to be on and off throughout the course of tomorrow.
Rather than a winter phenomenon, hail is surprisingly common during the most intense summer thunderstorms.
Lightning and hail storms, described by locals as like walking through a 'zombie apocalypse,' causes travel chaos in Brighton.
After a hot day across the UK, rain has arrived with thundery downpours and lighter showers across the northern regions.
A mild night is in store, before a similar balance of rain and shine tomorrow.
ITV News Weather Presenter Lucy Verasamy has the latest forecast:
We're spoilt with yet more sunny, hot weather today - for most there'll be more blue sky compared to yesterday.
Across Scotland and Northern Ireland a very different feel to yesterday with thickening cloud bringing some rain in from the west through the day,
A fresher, cooler day with the cloud but hotting up again in the sunshine and a little muggy again with highs 29-30C.
Today should be fine, dry and warm for most, with high temperatures in the southeast.
However, rain with some heavy bursts will move east across northern parts.
A few showers, locally heavy, are possible elsewhere and most likely in southeast England.
The showery rain will continue in the north tonight.
Elsewhere, it will be mainly dry with variable cloud and a freshening northwesterly breeze that will be strong in the northwest.
Another close, muggy night with downpours in the south, gradually easing.
Misty low cloud will roll back into north-eastern coasts from the North Sea by the early hours.
Rain will arrive in Northern Ireland by dawn and shuffle into Scotland through the morning.
Elsewhere, cloud will increase through the north-west through tomorrow but where the sunshine remains feel very warm - hot and humid across the south-east.
On Sunday, it'll be feeling much fresher as the muggy air gives way, and temperatures will dip a few degrees making it more comfortable. Expect some wet weather in many places before the end of the day.
It's humid for most of us at the moment - as they day goes on, though, it is not the full-blown blue sky we have become accustomed to in the last few days.
There will be intense thundery downpours across the south and south-east, while it will be a little misty and grey along the North Sea coastal counties.
Highs of 27 or 28 degrees in the north, and maybe up to 29 further down south this afternoon.
There'll be a soaking across the south on the journey home from work, but some late sunshine to come for the rest of us.
Any early mist and fog will burn back to the northeast coastline this morning, leaving a fine, dry and very warm day across much of the country.
However, this afternoon and at the start of this evening, locally heavy downpours are likely in the southeast, perhaps with thunder and giving some local surface water flooding.
Temperatures will reach 28 Celsius (82F), so not just as high as yesterday.
North Sea coasts will be cooler with a breeze from the sea and some misty low cloud.
Compensation for energy customers, who have been left without power for more than a day during severe weather, has been tripled.
Energy regulator Ofgem is to take action against two power companies, who have already paid out £4.7 million to powerless homes, for even more compensation.
ITV News correspondent Nina Nannar reports:
The UK will enjoy plenty of fine warm weather, with temperatures of up to 28C, heading into the weekend before a slightly unsettled couple of days.
ITV Weather Presenter Manali Lukha has the full forecast: