ROADS WARNING AS TEMPERATURES DROP TO -3C written by John2 January 8, 2016 DONEGAL County Council gritting lorries are out again in Donegal overnight after a widespread frost. Met Eireann forecaster Siobhan Ryan says temperatures have dropped to -3C in many areas.Readers are reporting icy conditions on many routes across the county – and gardai have appealed to motorists to drive with care.Tags:donegalicyROADSWarning