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Why is the sky blue?
The sky appears blue to the human eye as the short waves of blue light are scattered more than the other colours in the spectrum, making the blue light more visible.
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UK 5 day weather forecast
Headline:
Rain slowly spreading southeastwards.
Today:
Starting fine for most, but outbreaks of rain across Northern Ireland and western Scotland will steadily spread southeastwards. This will reach most northern and some central areas by mid afternoon, whilst the south remains dry with hazy sunshine. Generally warm.
Tonight:
A warm night, with showery rain slowly and sporadically spreading eastwards. Northern and western parts will turn drier, fresher and clearer, with isolated showers in the northwest.
Thursday:
Cloudier skies and showers in the southeast, perhaps locally turning heavy. Otherwise brighter and fresher elsewhere, with scattered heavy, possibly thundery showers mainly in the north and west.
Outlook for Friday to Sunday:
Unsettled on Friday with stronger winds and spells of heavy rain for many. Sunshine and showers over the weekend, likely to be heavy, thundery and most frequent on Saturday.
Updated:
UK long range weather forecast
Sunday will bring a mixture of sunshine and showers across northern Britain, with largely dry conditions to close out the weekend in the south. Into the start of next week, low pressure is most likely to be close to northwest Britain, bringing stronger winds and occasionally heavy rain. Further southeast, it should be mostly dry with the potential to tap into very warm air drifting north out of Europe. Towards midweek, the wetter and somewhat cooler weather in the northwest looks to push further southeast, displacing the warmth and sunshine here. By the end of the month, a more widely changeable pattern looks most likely, with the wettest weather most likely further to the northwest, and sunshine more prevalent in the southeast.
Updated:
As we move into August, the final month of the meteorological summer, confidence is low in the forecast with no one single weather pattern looking to dominate. As is often the case in summer, this could well mean plenty of fine, dry weather, interspersed with occasional thundery outbreaks, leading to marked local variations in rainfall. Temperatures are likely to pan out above average, perhaps more especially in the south and west.
Updated: