Fog & Ice Advisory For Saturday Night/Sunday Morning - The Meteo Times

Tonight will bring a severe frost to much of Ireland with temperatures dropping to -3c or -4c in sheltered inland areas. Temperatures will be hover close to or slightly above freezing in coastal counties and where cloud cover persists, particularly in Ulster. Patches of freezing fog will also occur and black ice will form on untreated roads.

Overnight, patchy rain or sleet will affect parts of Ulster with some wet snow likely, especially on higher ground with some snow flurries on mountains. Some light rain or sleet showers will affect parts of East Ulster and East Leinster during Sunday morning with wet snow likely above 300m.

Forecast chart valid @ 13 Jan-2013 06 UTC. Image
 Take care if you are driving, particularly on roads that have not been treated for ice.