Many of us were glad to see the first prolonged period of warm sunshine in late June, the first month of the meteorological summer.

But that now feels like a flash in the pan, as the all too familiar cloudy and cool conditions have returned.

There has already been rain at Wimbledon this week and it feels much cooler out and about.

So where has summer gone?

It is all about the jet stream and importantly its position in relation to the UK.

For most of our autumn, winter and spring the jet stream was close to our shores, throwing endless areas of low pressure and their associated weather fronts and strong winds our way.

This culminated in some very wet weather for us. However, towards the end of June, it finally migrated northwards, allowing high pressure from the Azores to build and bring warm weather our way.

However the jet stream has been on the move again and for the start of July it is back across our latitude and with it so is the cooler, cloudier weather.

However we can take a little comfort that we are not alone in this week's cooling trend. As you can see below, much of continental Europe has seen temperatures falling away too.

This graphic shows the temperature anomaly: how the temperature differs from the average conditions expected for a particular place at a given time of year. Blue indicates colder than average, and red hotter.

Though it remains hotter than expected in parts of south-eastern Europe, the only area likely to see temperatures rising noticeably in the next few days will be the Iberian peninsula, particularly Portugal.

June in the UK on the whole was cooler than average, contrasting to last year's record breaking heat.

Indeed, surprisingly, for some areas May was warmer than June.

Cold Arctic winds dominated the first half of the month leaving temperatures two degrees Celsius below average.

The late June warmth helped to offset this a little and in parts of south-east England temperatures exceeded 28C for several days.

Perhaps most notable, however, was how dry June was - the first drier than average month for some time. Only Northern Scotland exceeded its average rainfall.

The weather is see-sawing this week. No two days will be the same but it will stay cool for early July.

Thursday looks showery and unseasonably windy – showers will be most frequent across the northern half of the UK where hail, thunder and lightning are likely at times.

Friday sees low pressure bringing a spell of rain across England and Wales, while Scotland and Northern Ireland stay showery.

Saturday looks like a return to sunny spells and showers - again, these will be more prevalent in the north.

And Sunday again holds the risk of more rain coming into the south of the UK. But the jury is out on this one, so watch this space.

There is a high chance of rain interrupting play on Wednesday. Thursday at least looks like a drier, sunnier and warmer day, despite a blustery wind.

It is back to the risk of rain again on Friday but Saturday currently looks largely dry.

By Sunday rain may well spoil play again - that said there is less confidence about the low pressure coming in later in the weekend.

You may have noticed the torrential downpours that have affected play at the Euros in recent days.

The next few days in Germany are going to be cooler than average as the teams train. This typical football season weather might suit the England squad, though it will be less enjoyable for fans following the team.

By Friday and Saturday for the quarter-finals it is looking breezy with the odd shower around, with perhaps some rain on Saturday when England take on Switzerland in Dusseldorf.

It is worth keeping up to date with our latest forecasts for the UK and around the world online and via the BBC Weather app.