A timeline of notable weather events and extremes that have taken place in Ireland on 18 November throughout history.

1967 – Overnight temperature dips to -4.2 °C at Phoenix Park, Dublin.

1971 – Maximum daytime temperature in Dublin reaches only 2.6 °C.

1990 – A gust of 103.5 km/h is recorded at Malin Head, Co. Donegal.

1996 – Clones, Co. Monaghan reports a daytime high of just 1.8 °C; Kilkenny records an overnight low of -4.6 °C.

2016 – The northern half of Ireland experiences numerous lightning strikes, with falls of hail and sleet. Daytime temperatures range between 4–6 °C.

2019 – Mount Dillon, Co. Roscommon records the month’s lowest air temperature (-5.5 °C) and lowest grass minimum (-10.6 °C).

2023 – Phoenix Park, Dublin reports the month’s highest air temperature at 14.6 °C.