Heavy thundery rain caused local flooding and lighting strikes were detected in many parts during the night.
The 'squall line' arrived on the east coast early today with storm force winds on the Irish Sea but by dawn the worst was over in most places.
Ten millimetres of rain an hour fell during the worst periods of the high winds.
But while the high winds have dissipated, temperatures are set to drop over the weekend with a Met Eireann forecaster advising people to "wrap up."
The weekend is expected to be decidedly cooler, dropping to -3C is some areas, after a relatively mild week.
Tonight, heavy showers in places will become confined to coastal counties of the west and northwest. Most other areas are expected to be dry and clear with some grass frost in parts of the midlands, east and south.
It will be cold and bright tomorrow with sunny spells but heavy rain and hail showers also, mostly through the west, but some scattered ones in eastern areas in the afternoon.
There will be a risk of isolated thunderstorms in coastal areas of the west.
Tomorrow night will be dry and very cold with air temperatures falling to between 0 and -3C, resulting in a widespread sharp frost and risk of ice.
Saturday will be cold and bright with sunny spells at first and frost and patchy fog clearing. It will get windy and overcast through much of Munster and south Leinster with heavy rain in these parts by evening.
It will be windy with heavy rain on Saturday night mostly in the south and east with some colder clearer weather in northwest and some frost.
On Sunday, rain in parts of the northeast or east will clear and the day will be cold and mostly dry with a few showers.
Early next week will be cold and breezy with sunny spells in most places, with temperatures below normal.