The Met Office warns that strong gale force Arctic winds will continue to blast northern parts of the United Kingdom as a yellow weather warning remains in place until Wednesday.
The various weather warnings have cautioned about the possibility of travel delays on roads, public transport cancellations and power cuts.
Power cuts may occur with the potential to affect other services such as mobile phone coverage. "In addition some roads and pavements will turn icy, increasing the chances of accidents or injuries".
The showers turning wintry in many areas by dawn with falls of snow possible over high ground.
Further rain will fall overnight which will be followed by some very strong winds and showers on Thursday.
Gritters were out in force across Scotland, with pictures on social media showing particularly hard driving conditions on the M8 near Easterhouse.
The yellow warning of wind for Wales and England is in force from midnight to 9am on January 18.
The national weather service stated: "There will be widespread wintry showers, some heavy and with thunder too".
The warning has been extended further south and east to cover small amounts of snow, for example in parts of southern England.
In areas which saw snow, temperatures dropped to between 0C-2C (32F-36F).
Thus, yellow warnings are in place for both Thursday and Friday in most areas of Northern England and Ireland. An Atlantic depression will cross Ireland this evening and early tonight bringing a spell of snow on its northern flank.
Very strong winds will affect parts of the United Kingdom during Wednesday (January 17) night and into Thursday.
London and the surrounding areas will feel the tail end of the gale, with 30mph winds and hail showers predicted.
Met Eireann forecaster Clara Finkele said that although Storm Fionn has passed over Ireland, we should brace ourselves for strong winds and heavy rain. "Strong winds bring the potential for temporary blizzard conditions and drifting of lying snow, mainly over high ground".