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

1959: Phoenix Park in Dublin records 22.3 °C, just one day after setting its record for the warmest October temperature.

1969: RTÉ News reports a lower harvest yield compared with the previous year due to prolonged dry weather, though farm mechanisation boosts returns for grain and beet growers.

1988: Heavy rain and strong winds hit Munster. Valentia records over an inch of rain, while Roches Point logs a 92 km/h gust.

1994: Overnight temperatures in Leinster fall below freezing.

2019: Storm Lorenzo brings storm-force winds and substantial flooding in Donegal, affecting Donegal Town, Bundoran, Ballintra, Laghey, and Frosses.

2024: Met Éireann issues an orange weather warning.