Brits looking forward to an extended Bank Holiday weekend for the Queen's Platinum Jubilee may be faced with a washout and colder temperatures.
The Met Office forecast predicting the weather next week does say there is a possibility of sunshine if a high pressure is dominant to the west of the country, coming in from the Atlantic, as it is still early to be sure what will happen.
But if a low pressure over the Azores comes closer, then it is likely to bring showers for the whole country with Met Office forecaster Aidan McGivern calling it a "loose cannon".
The UK will enjoy a four-day Bank Holiday weekend beginning on Thursday June 2 to celebrate Queen Elizabeth’s 70 years on the throne.
Events are being planned up and down the country for the historic occasion.
Mr McGivern said that colder and rainy weather will start moving in from Sunday and then it will be quite unsettled and unpredictable by the end of the week.
"The trend towards more unsettled weather continues later on Sunday as low pressure over Scandinavia begins to drift its way westwards appearing into the North Sea, containing a lot of cloud, some rain as well which may well affect the North Sea coast, parts of eastern England, parts of eastern Scotland during Monday," said the forecaster.
"Again the driest and brightest weather will be towards the west and that is closer to the high pressure. Sunny spells and feeling pleasant in the sunshine but always a chance of a shower in the west.
"More likely we will see showers in the east, along with that brisk wind it will feel on the cool side, temperatures declining day by day and overnight temperatures will decline as well so some chilly nights to come, Sunday night, Monday night, Tuesday night for example."
Then there is an unusual weather system with a low pressure over the Azores and high pressure over Iceland, which means the jet stream is weaker and the systems are more random.
The low system is like a “loose cannon, its going to meander about fairly randomly, that makes its behaviour difficult to predict," said Mr McGivern.
There is uncertainty how much rain will fall for the four-day weekend.
“Some computer models are suggesting that low will drift our way from the south west for the end of next week to bring widespread showers and outbreaks of rain from the south west," said Mr McGivern.
"Higher pressure towards the north west, lower pressure towards the east but other computer models suggest we keep the higher pressure to the west and lower pressure to the east."
Meanwhile for today there is a clear north-south divide with sun and warm temperatures in the south with the mercury rising up to 21C.
But for Scotland there is wind and rain with lows of 11C.
UK forecast for the next 5 days
Showers in north Scotland but dry elsewhere.
Today:
Many southern and central areas having plenty of sunshine and lighter winds, meaning that it should feel reasonably warm by afternoon. Northern Scotland sees sunny intervals and scattered sharp showers with winds slowly easing.
Tonight:
Showers dying out away from far northeast Scotland with winds easing. Good clear spells for most leading to a chilly night with perhaps a few fog patches in the west.
Saturday:
A fine, dry and sunny day for most and feeling warm in sunshine and light winds. In the east cooler with onshore winds and a few light showers possible.
Outlook for Sunday to Tuesday:
Cold start for many west and southwestern areas, Sunday. Cloud and showers, already affecting the northeast, will spread to all areas, lasting through Monday and Tuesday. Rather cool, or cool.
