Met Éireann has issued two status yellow weather warnings for today (Wednesday) with temperatures set to plummet to -4c.
The cold snap will follow a high wind warning for Ireland with winds expected to reach speeds of between 50 and 65km/h with gusts of between 90 and 110km/h.
Winds will be strongest in the West and North West areas of the country.
Householders are advised to ensure that all items of garden furniture, trampolines, bins etc are properly secured.
Motorists are asked to be aware of fallen trees or branches which could make driving conditions hazardous during the day.
Met Éireann has also issued a status yellow snow and ice warning for the entire country for Wednesday and into Thursday.
Wintry showers are expected to bring snow accumulations of up to 3cm at lower levels today (Wednesday) and through Thursday, all areas at risk.
Showers will be most frequent in the West and North and over hills and mountains with higher accumulations expected there.
This weather warning is expected to stay in place until 9pm on Thursday, January 29.
Temperatures are expected to remain cold but no further snow falls are expected through the weekend, however motorists are advised to travel with caution as icy conditions will prevail and roads will be slippy.
Caution is advised, especially on untreated secondary roads.
Aer Lingus has been forced to cancel a number of flights between Dublin and New York due to blizzard conditions and falls of snow of up to nearly a metre in New York.
The US National Weather Service has described the approaching weather system as “crippling”.
Parts of the East coast are expected to experience snowfalls of between 30 and 60cms, with the New York area experiencing the worst of the conditions of lashing winds accompanying the snowfalls.
Residents in New York have been advised to remain indoors and keep warm
Those travelling to the Eastern coast of the US this week are also advised to check with the airlines in advance for an update on cancellations.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.