Met Office issues frost warning as 'Arctic blast to sweep across UK'
Below-average temperatures are sweeping the UK due to a chilly Arctic air. The Met Office said patchy frost and cold winds are expected to hit Britain this week.
Blustery showers with a small risk of thunder and hail are forecast, particularly in the north. Some snow or sleet may be seen on the Scottish mountains on Wednesday, September 11.
Temperatures will be about 4C or 5C below average for the time of year, with 10C to 13C in Scotland and 13C to 16C in southern England.
Met Office meteorologist Clare Nasir said: "Yesterday, (there were) severe gales across the north east of Scotland and some persistent rain, all courtesy of this area of low pressure.
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"And this low, the position of it, continues to affect our weather through the next few days." This means 'showers, some sunshine and cold winds' could be seen, she added.
Showers will continue through Wednesday evening and overnight but will fade away in land. They are predicted to be more frequent across northern and western areas.
Frost could be seen in some areas overnight as temperatures drop to 4C or 5C - but sunshine is forecast to follow. Ms Nasir said: "Winds won't be as blustery across in-land areas, showers particularly along the coastline, they may develop in land, but there will be some drier interludes and a mix of cloud and sunshine yet again, temperatures 14C or 15C in the south."
It will generally be a dry day on Friday, September 13, after possible patchy frost again on Thursday night.
She added: "A ridge of high pressure is moving in, so a cold start, with a localised frost, but with that we'll see some sunshine. All change though as we head into the weekend from the north west."
Temperatures are expected to return nearer to average for this time of year at the weekend, with highs of up to 21C in the south. Meteorologist Tom Morgan said: "It will be much warmer and settled in the south, but it's turning wet and windy for western Scotland.
"It's much more typical September weather on the way into next week too."