Three warnings for snow, ice and windy conditions have been issued by Met Éireann, two of which are for Donegal.
A Status Orange wind alert for the county will be in place from 8am to 12pm tomorrow.
Southwest winds veering west to northwest are set to reach mean speeds of 60-75km/h and gust to 100-120km/h.
Met Éireann says that due to a combination of waves, spring tides and surge, there is a possibility of coastal flooding.
A Status Yellow alert for snow and ice in Donegal came into effect this afternoon.
Showers will turn increasingly wintry with a mix of hail, sleet and snow, resulting in localised accumulations of snow, and icy conditions on untreated surfaces.
The warning is in place until 8am tomorrow.
Meanwhile, a Status Yellow wind warning has been issued for 11 counties, mainly in the northern half of the country.
The alert covers Donegal, Cavan, Monaghan, Dublin, Louth, Meath, Galway, Leitrim, Mayo, Sligo and Clare.
Southwest winds veering west to northwest are expected to reach mean speeds of 50-65km/h and gust to 80-110km/h with coastal flooding is possible.
This alert is in valid from 4am to 6pm tomorrow.
The warnings come after new wind and rainfall records were set in Ireland last month as three storms - Ciara, Denis and Jorge - battered the country.
Met Éireann said the position and strength of the Polar Jetstream resulted in 1.5 to 3.3 times the normal monthly rainfall for February throughout the country - a month usually associated with one of the least rainfall amounts.