Only six counties are safe.
As you might have already noticed, it's raining today. This rain is set to continue throughout the rest of Sunday, and showers will be heavy in places during the afternoon with isolated thunderstorms possible.
20 counties are on the receiving end of a status yellow rainfall warning issued by Met Éireann, which will be in effect from 6pm this evening until midnight on Monday.
The warning advises that "Heavy rainfall will occur during the period indicated with the potential for heavy downpours locally and during shorter intervals. There is potential for flooding on already saturated or waterlogged grounds."
All of Munster and Connacht are set to be affected, as well as Carlow, Kildare, Kilkenny, Laois, Longford, Wexford, Wicklow, Offaly and Westmeath.
Thunder is set to become a feature of the next 48 hours no matter where you are, with Met Éireann forecasting that a batch of rain will move up from the south to affect the entire country overnight.
The rain will be heavy with thundery downpours in places giving the risk of flooding, and temperatures will drop to lows of three degrees Celsius.
Thunder will also hit on Monday, with Met Éireann predicting "persistent, sometimes thundery rain to move up into other areas on Monday with the potential for some high volumes and localised flooding."
