18/09/2014 BBC Weather

and west. Top temperatures likely of 21 degrees. Possibly a bettdr day by

Sunday. 21 degrees. Possibly a better day by

Sunday. Hello, you know when you get

temperatures in the mid-20s at this time of year that we are on borrowed

time. By the weekend, we will not be getting 26 Celsius like today. But

by the weekend, we're not going to have the low cloud we have had in

Edinburgh throughout the week holding the temperature down, so

there are some changes on the way. Right now, the warm muggy air has

been triggering thunderstorms across the south of the UK. Bristol and

Cardiff, and other areas heading towards the south coast. Southern

England, the Midlands and Wales as the night goes on, some torrential

thundery downpours. May keep some of us awake. For Northern Ireland,

northern England and Scotland, mainly dry, but missed and low

cloud, hill fog becoming extensive again. It is muggy. This is the

morning, difficult to pinpoint exactly where the downpours are

going to be, but we have to cater for the possibility in London,

across into Bristol, the Midlands and Wales. Not for everyone, but

where they are, they could be torrential with a lot of surface

water and spray. Northern Ireland, Northern Ireland and Scotland will

start mainly cloudy and dry. Missed, low cloud and hill fog for much of

the UK. There will be some showers. Not as heavy as they are further

south in the afternoon. Isolated thundery downpours. Wales, the

Midlands and East Anglia. As it brightens up through the afternoon,

southern England and South Wales will become warm again, but that

could trigger further torrential thunderstorms and a risk of hail

into the evening. Saturday, still a few heavy showers affecting southern

areas from the word go. Showers in the North, moving south but brighter

and fresher weather in Scotland and Northern Ireland. Getting rid of the

low cloud in eastern Scotland. High pressure on Sunday, fresher when,

sunny spells. Not as warm but less humid, better air quality and better

visibility. That might take some boxes for you. The story of the

weekend, the cloud is lifting, better visibility and turning

fresher. But cooler? Yes. So probably

Is rocket science easier than you think?

Well, BBC iWonder is full of great questions

for curious people like us. They just keep on coming.

Luckily, they have the answers as well.

Actually, could we leave it there, cos I'd quite like to