ITV REPORT 21 January 2015 at 1:00pmJet Stream on the move - Less cold by the WeekendFrom last weekend the jet stream has been south of our shores - keeping low pressure systems at bay but allowing very cold air to linger over the UK for much of the week.For the rest of the working week we stick with cold days and frosty nights, with the risk of icy patches and maybe some freezing fog. Thursday should stay dry but rain will move in on Friday - beginning a process of change. This week the jet strems has been south of us - leaving the UK on it's colder sideThis week the jet strems has been south of us - leaving the UK on it's colder side Credit: Met Office/ ITVAs we head into the weekend the jet stream is on the move again - this time returning north of the UK.By Sunday it will have introduced a milder airstream with temperatures back to near-normal. But this will be a more mobile and more unsettled set up, with a higher risk of stronger winds and spells of rain - especially the further north and west you are. By the second half of the weekend the jet returns north of the UK, bringing milder air our wayBy the second half of the weekend the jet returns north of the UK, bringing milder air our way Credit: Met Office/ ITVLast updated Wed 21 Jan 2015