It follows a day of high winds on Friday which saw a gust of 105mph in Lerwick, Shetland.
The forecaster said on their website: “Icy patches expected to develop overnight/early Saturday in many parts of the country in spite of the wind”. These south-westerly winds are expected to bring frequent gusts of 70 to 80mph with occasional gusts of 90mph.
People should be prepared for the likelihood of hard driving conditions and disruption to travel.
A spokeswoman for the Met Office said: “In Devon and Cornwall, we will be getting the tail end of Storm Gertrude, which will mean heavy rain”.
A Met Office spokesperson described the situation as “complex” and said: “Parts of the United Kingdom will be subject to severe weather patterns with snow, wind, ice and rain”.
Electricity North West say they have engineers on standby to cope with any disruption caused by falling trees or power lines.
Julia Carson, NIE Networks Communications Manager said: “We have already restored power to 17,000 customers overnight and are continuing to assess the damage and carry out repairs”.
For travel updates visit Traffic Scotland, Transport Scotland or Ready Scotland.
Phil Verster, the alliance managing director at ScotRail, said: “We will be withdrawing some services until the worst of the storm has passed”.
Around 600 people were evacuated from their homes in the Scottish Borders on Wednesday over renewed flooding fears and firefighters had to rescue a bus driver caught in water on the B6405 route near Hawick.
A yellow weather warning has been issued for north and south-east Cornwall from tonight, as Gertrude heads for the UK.
In times of severe disruption you can also follow the BBC Scotland severe weather Twitter list of key sources.
With the strength of the winds, it is likely that the storm will blow debris and trees onto tracks and damage equipment such as overhead electric power lines and signals.
The Scottish Environment Protection Agency (Sepa) has nearly 40 flood warnings in place covering Ayrshire, Tayside, west central Scotland and the Highlands.
“Additionally, as a result of these winds, very large waves will develop and affect western coasts, during high tide”.
Trains on the East Coast mainline have suffered delays throughout the morning due to overhead line problems at Berwick- Upon-Tweed and trains having to run at reduced speeds because of high winds. Greater Manchester is also under a weather warning until 6pm on Friday evening, with gusts of 55mph expected at times.