A timeline of notable weather events and extremes that have taken place in Ireland on 4 December throughout history.

1947: 48 mm of rainfall is recorded at Phoenix Park, Dublin, almost two inches.

1950: The maximum daytime temperature in Dublin is 0°C.

2010: The overnight temperature dips to -6.3°C in Mullingar, Co Westmeath.

2015: The record daily rainfall total for December in Ireland, 160.8 mm, is recorded at Keenagh Beg, Co Mayo. As Storm Desmond approaches, Met Éireann issues a status red rainfall warning for Connacht and for counties Donegal, Clare and Kerry. Clare County Council also issues a flood warning.

2018: The lowest grass minimum of the month is reported at Oak Park, Co Carlow, and Mullingar, Co Westmeath, with -6.5°C.

2020: Mean wind speeds (95 km/h) reach storm force at Malin Head, Co Donegal.