Snow, overnight frosts and ice across various parts of the country have already heralded the first signs of winter – and forecasters warn a vast cold front is just around the corner.

While some would argue the weather at present is hardly mild, the Met Office has ominously tweeted: “Make the most of the relative warmth for one more afternoon, because this cold front signals a big change in our weather to much colder conditions.”

It added: “The clocks will be going back this weekend, but so are the temperatures!!”

Met Office chief meteorologist Laura Paterson said: “It will feel very cold this weekend, with strong winds bringing heavy showers to many parts.

“Northern-facing coastal areas will see the most frequent showers, whilst elsewhere will see more in the way of sunshine.

“These showers could contain hail and turn to snow on the high ground, mainly Scotland, Northern Ireland and perhaps northern England.”

Met Office meteorologist John West described it as “a real change in feel from the rather mild weather due to high pressure in the UK and replaced by a strong northerly flow from the Arctic”.

Temperatures of 16C in Aberdeen and 19C in Southampton on Wednesday tumbled to 12C and 13C on Thursday, and are set to hover between 7C and 10C on Friday and 6C and 8C on Saturday.

West said: “While the thermometers will be maxing out at about 6C it will feel colder in that strong northerly wind.”

The difference will be felt in daytime temperatures, with westerly winds on Thursday compared to northerly winds on Saturday.

It looks like Saturday will be the coldest day, with temperatures recovering slightly for Sunday and showers becoming more confined to eastern areas.

Stein Connelly, of Transport Scotland, said: “Snow, sleet and ice look set to move into parts of Scotland at the end of this week, particularly over higher routes.

“Our operating companies have already started their winter services and will closely monitor the trunk road network, providing appropriate treatments where necessary.

“As always, we encourage motorists to plan their journeys ahead of time, follow police travel advice and drive to the conditions.”